Power on demand

Hello,
is there a possibility to switch on a mac in shut-off-state by only plug in the power cable? I don´t talk about "wake on demand", where the computer must be in sleep-mode and has to have a network connection.
To make it more clear:
On a linux-pc it´s possible to make changes in the BIOS, so that the powered-off computer boots as soon as the power-cable is plugged in. This is what I´m looking for. But it seems impossible without sleep-mode. I can´t use any kind of sleep-mode, because I´m working in the audio domain, where sleep-mode causes problems with software and audio-interfaces.
I have read the articles about "wake on demand" e.g. About Wake on Demand and Bonjour Sleep Proxy - Apple Support and others, but they only deal with wake on demand in sleep-modes.
thanks

I don't have access to a Mac mini running Yosemite at the moment but did look at one running Mavericks. There is an option in Energy Saver settings to automatically turn back on after a power failure. This would do what I believe you want with one important proviso.
If you have a UPS either connected to the Mac via a USB cable or using a software agent to monitor the UPS then this setup is intended to allow the Mac to spot a power failure even though being protected by the battery of the UPS and when the battery level gets below a certain level to then turn off the Mac. The problem is that when the Mac has been turned off this way it counts as a proper shutdown and not a power failure induced shutdown. The result is that when power is restored the Mac does not start back up.
So far there appears to be no way to both use a UPS (with monitoring and clean shutdown) and to have auto power up. The nearest option I can see would be to set a scheduled Startup also in Energy Saver settings. You do not have to set a scheduled shutdown.

Similar Messages

Using LabVIEW for temperature control with AMREL SPS200-50-A022 power supply

Hi, I hope someone can help me out. I'm an ME undergrad with pretty much no knowledge of LabVIEW. I am working a project which requires a temperature controller. Previously, we were using an SPS120-10 power supply from AMREL and a grad student wrote a LabVIEW VI which performed feedback temperature control. The VI would acquire temperature from a Benchlink which acquire the temperature from a thermocouple. The VI also monitor the output voltage & current and determine the power output and heater resistance from those values. When a desired temperature is set, the VI compares the actual temperature to the set temperature and adjust the voltage/current setting to achieve the desired temperature. The VI was designed to keep temperature deviation to within +/-0.5 deg C. I'm not sure of the data refresh rate, but it's on the order of seconds since the system has a small thermal mass and we're operating in the 800+ deg C range. When we were using the SPS120-10, the device used GPIB for communication with the PC. Due to higher power output demand for the heater, we switched to an SPS200-50, which only has an RS-232 port. First of all, I was wondering if someone could help me modify the VI so that it could communicate with the SPS200-50 through the serial port? In addition, the drivers for the SPS120-10 and SPS200-50 might be different. If modifying the VI to communicate through the serial port isn't enough, I would need to figure out where to modify the VI with the SPS200-50 drivers, which is provided by AMREL. If anyone would like, I can send you the VI files so that you can take a look at the block diagram and tell me where to modify it. I'm still not 100% certain I understand how to read LabVIEW block diagrams.
Please let me know if you need any additional information. Any help would be appreciated. Thanks in advance!

I have looked over your vi. First of all you have to do some changes in the "ARSPS Initialize.vi" See picture.
The best way to check instrument communication is to send the *IDN? Command. The instrument will indentify itself in response to this command. The vi I have included is a labview example. Use this Vi to test your communication. Do not progress before this is working. The VI is also an excellent example on how to set up and close down RS232 communication.
The VI "Tfeedbackpowercontroller-nolvdt-Dinh.vi" looks OK so I guess it will work then your RS232 communication with the SPS200-50-A022 is working
good luck
PS as mentioned before you will find all the RS232 details in the instrument manual
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)
Attachments:
sample.PNG ‏38 KB
Basic Serial Write and Read.vi ‏29 KB

Wondering about power management with desktop computers

I use Arch on my desktop computer, so there's no need to worry about conserving energy.
But my computer has been much louder since installing Arch; I assume this is because it is running at max, and that is because I have no power management tools installed.
Is running my computer at max speed all the time beneficial to the system? Or should I install something to scale the power on demand?

solar impulse wrote:I use Arch on my desktop computer, so there's no need to worry about conserving energy...
That is unfortunate.
I disagree with some of the things being pushed by the greens; A lot of what they push are thermodynamically or ecologically wrong when you look at the big picture. But, that said...
We should take reasonable steps to conserve wherever we can. There is no reason for a desktop to scream along at full speed running "Screen savers" that require significant GPU effort. At the least, a desktop should be configured to reduce CPU speed, turn off the displays after a couple minutes of non-use, turn off the eye-candy screen savers and spin down disks after some reasonable amount of time.
Look for peripherals that have low-power modes (especially printers)

Green Power CPU Phase Control + C-STATE + Turbo Boost ?

Does anyone know if we can turn on MSI's Green Power CPU Phase Control + Intel C-STATE + Intel Turbo Boost in BIOS all at the same time? Any problems with doing this? Does MSI's Green Power CPU Phase Control override or conflict with Intel's C-STATE? And will Turbo Boost kick in if turned on when a core needs it even if Green Power CPU Phase Control and C-STATE are switched on?
I really like the idea of the PC running cool and quiet when doing lite work, but would like full power on demand as well.
Thanks.

I'm using Intel speedstep (EIST) but i disabled c-state because this brings a unstable PC for me.
I'm using also the greenpower genie and it works very well.
When i don't need the power my PC falls back to 50% 2154MHz (this you can choose in the energy configuration of windows), when i play games or decode movies it goes up to 100% 4130MHz. And it is stable as a rock tested 24/7 prime 95 and OCCT and Intel burn test.
My settings are=
Eist enabled
Turbo enabled
C-state disabled
Greenpower auto
My CPU temp in idle is 24° cores 38° and this on aire (room temp 21°-22°) Load 100%=CPU 60 and cores 70°-72° ( prime stressing), gaming CPU 42°-45°.
For more info on my sys. follow link and see my overclock and voltage settings.http://www.hardware.info/nl-NL/usersys/cm9xZ51mk2yd/view/
I also changed cpu skew and ioh skew to 200ps so i don't get BSOD that says :cpu did not receive clock on time , but this is only necessary when i go above 178 MHz BCKL.

My mac won't turn on again, it just shows the apple logo and some code

My mac was freezing up a bit while trying to get onto lanaboards.com so I decided to restart it. I figured i might as well update it at the same time. So i did that and chose the restart option that comes up when you update. It seemed like the update went through, but then it told me that it couldn't update but i was asked if i wanted to restart it, so i did. For some reason it didn't restart for a couple of minutes so i turned it off by pressing the on/off button. When i turned it back on it made the sound and then the grey background with the Apple logo appeared. Suddenly this code comes up using the word "panic" a couple of times. I'm not gonna type the whole thing cause it's kina long. It also says "Mac OS version: not yet set" (maybe cause i tried to update?) and "Kernel version: David Kernel version 12.2.1" It also says "debugger called: <panic>"
I won't be able to get it to the apple store for a week because everything closes down on thursday because of Easter and the buses seem to not go tomorrow and no one can drive me. I hope there's something i can do cause i have an important exam (100% of my grade) in two weeks so I'm freaking out a bit here. I also have some stuff due next week that just went up.
I really hope someone can help me, or at least know what may be the problem.
PS. I'm not 100% sure which operating system I have so i chose what i assume is the second newest iOS cause I know i have iOS at least
PS 2: My hard disc crashed about two months ago and was fixed at my local apple supplier, if that may have anything to do with the matter.

you are not in MacBook Pro forum, so might be harder to swap out and replace hard drive but you should definitely have had them do that or even yourself.
Make sure you are at least using TimeMachine AND another backup method to clone your system drive so you always have a working 'spare' backup drive you can boot and work from - USB3 is good, TimeMachine even works decently for some on USB 2.0
Finding out why and troubleshooting a panic is a matter of trial and error after taking a look at what hardware, what software you installed (and some of which should be removed), even whether it is triggered by heat from processor or RAM (memory) errors, and memory errors can be triggered by software.
Reset SMC
http://support.apple.com/kb/HT3964
Resetting NVRAM
http://support.apple.com/kb/HT1379
Safe Mac Guide
http://www.reedcorner.net/mpg/
About Mac OS X Kernel Panics:
http://support.apple.com/kb/TS3742
Resolving Kernal Panics
http://www.thexlab.com/faqs/kernelpanics.html
http://reviews.cnet.com/8301-13727_7-10344626-263.html
http://macs.about.com/od/usingyourmac/qt/Troubleshooting-Os-X-Kernel-Panics.htm
http://support.apple.com/kb/TS3742
There’s trouble in my laptop paradise. I ended that with this caveat:
It’s much more comfortable to type on the 2011 model, with one big exception: the 2011 model runs much hotter.
I need more time to form a concrete opinion, but it seems so far that this CPU’s awesome performance definitely comes at a cost of increased heat and reduced battery life. For my intended usage as a desktop most of the time, that’s an acceptable tradeoff.
This turned out to be worse than I thought it would be, and today, the last day of my return period, I decided to return it and exchange it for a slower model.
The problem
Not only does the 2011 15” MacBook Pro run much hotter than previous generations, but as a result, the fans very frequently kick up to full speed (6200 RPM), greatly annoying anyone in the area who’s not wearing headphones.
I’ve done a lot of Google research and impromptu Twitter surveys, and this seems like a very common problem, exacerbated by a number of factors:
The quad-core i7 CPUs in the 15” run very hot, with a TDP of 45W, 10W higher than the previous dual-cores. Many people speculate that the 15” case and fan design just isn’t designed for CPUs that need this much cooling regularly.
The Core i7 CPU can use Intel’s Turbo Boost to dramatically overclock one CPU core to handle single-threaded loads whenever power and heat allow. It therefore hits its maximum TDP often when just one core is being maxed out, such as when Spotlight or Backblaze index new files, or when Time Machine is backing up.
The 2.2 and 2.3 GHz 15” models come with an AMD Radeon HD 6750M GPU, which adds significant heat. Modern 15” MacBook Pros dynamically switch between the low-powered Intel integrated GPU and the high-powered (and hot) AMD GPU as needed by applications, but the AMD GPU will always be used when an external monitor is connected — the Intel integrated GPU cannot output video over the Thunderbolt port in the 15”. (Oddly, it can in the 13” MacBook Pro and both MacBook Airs.)
It generates so much heat that it can’t be used in “clamshell mode” (closed, but with an external keyboard, mouse, and monitor attached), which has reduced airflow, without risking overheating, kernel panics, and possible long-term damage. I can’t see why Apple even enabled clamshell mode on it.
Some people report issues with the battery draining while playing a game. The 15” MacBook Pro comes with an 85W power adapter, but when stressing the CPU and GPU (such as when playing a game), the laptop draws about 93W — I don’t know enough about the electronics here to say for sure, but an insufficient power adapter capacity sounds like a plausible reason why the battery might drain under high computational load. If so, this is an embarrassing oversight by Apple.
The thermal paste seems to be very inconsistently applied, or there’s some other common manufacturing defect with the cooling system that varies per laptop. Many, many people reported having these issues and exchanging the laptop for a new one that shows far fewer issues. Many dedicated tinkerers have also reported success after reapplying the thermal compound between the CPU and heatsink, but that requires a very deep, warranty-voiding disassembly that I’m not comfortable doing. (I also haven’t owned thermal paste since 2001.)
Put simply, it sounds like the 2011 15” MacBook Pro has a lot of manufacturing inconsistencies and defects that result in improper cooling. But it also sounds like Apple wedged far too much power draw and heat into an enclosure that’s not designed to properly cool or power these demands. It’s not like Apple to release products like this.
But if I can get one working within my tolerances, it’s still the perfect computer for me right now. So I’m trying.
The attempted solution
Tonight, after requesting the return on my 2.3, I ordered a new, slower model that’s likely to run cooler with less fan noise. It’s the base-model 15”, but with an antiglare (matte) display added:
AMD Radeon HD 6490M: It’s manufactured on the same 40nm process as the 6750M, but has far less computational power, so I’m guessing this will result in much lower power consumption and heat.
2.0 GHz quad-core i7: This is the only CPU available with the 6490M. While I don’t expect it to be dramatically cooler-running than the 2.3 since it’s specced with the same 45W TDP, it does have a lower clock and lower Turbo Boost speeds, so I can probably expect an approximately proportional heat reduction.
So I’ll see what happens. I’m not sure what I’ll do if it doesn’t work out. This generation of 15” MacBook Pros has a lot of problems, and Apple really needs next year’s cooler-running Ivy Bridge processors as soon as possible.
http://www.marco.org/2011/09/20/heat-and-fan-issues-with-2011-15-inch-macbook-pr o

CS6 recommended video cards?

Building a Photoshop machine.
Been referencing numerous websites droning on and on about CS6's new performance improvements.
Still hazy on which video cards, or perhaps which features, of video cards, ought to be included on the card to go in the new machine.
Planning to spend 200-$300.
Any advice here?

It seems it's NEVER possible to just say "get this model" because all of them have strengths and weaknesses.
I develop GPU-enhanced software (not Photoshop, but plug-ins for Photoshop). My experience has been that ATI's driver quality is higher than that of nVidia. I have to code more exceptions in my software for both nVidia and Intel than ATI models.
That said, of course "past results are no guarantee of future performance", and ATI seems to have been stumbling lately with their last few driver releases. Catalyst 12.2 (from this past March) seems to be the golden version to get.
If I were put on the spot to recommend a video card right now at the moment, I'd probably suggest the VisionTek ATI Radeon HD 7750 model. I have been using exclusively VisionTek brand cards myself and I've had ZERO problems with them. I don't personally have the model I mentioned (I have a 5670 in my main Photoshop workstation now myself, though I'm tempted by the new 7000 series), but I know someone who does. Keep in mind video cards have different power supply demands; the card I mentioned is a low current-draw model (the 7750 doesn't even require a separate power supply connector), and low current models are quieter and don't make as much heat.
-Noel

USB Ports not working with specific devices

So this one has me scratching my head. My USB ports on the back of my iMac are working except for a few devices. 1 being a logitech USB receiver, and 1 being a usb mp3 player. When I plug the received into the iMac the keyboard won't work, but when I plug my USB hub into the same USB port and the receiver into the hub it works fine. The mp3 player isn't working in any usb/hub (so that's a mook point).
Here's what I've tried to resolve this issue:
1. Reset iMac
2. Reset PRAM
3. Try every usb port on the back of the iMac
None of these have fixed my issue. Plugging it into the hub isn't a huge deal, but I'd like the option to use my USB ports as I wish without having to deal with this. Anyone have advice on a solution?

It is not a matter of using your USB ports as you wish, it is a matter of what you are plugging into them and the power demands that what you plug into them makes on the system.
Not all USB ports or devices are created equal. How many ports are you using? What exactly are you plugging into the ports? What is the power demand of each item that you are plugging into each port? Are any of the USB devices self powered from their own separate power supply? Are all of the devices dependent upon the iMac for power?
It sounds to me that you have too many high power devices demanding more power through the ports than the iMac can accommodate. Is the USB hub self powered? If so, that is probably why it resolves your issue with the Logitech Unified receiver. There is very little info on this device on the Logitech website, so I could not ascertain its power demands.
Dah•veed

Vodafone not enabling firmware update!!!

I fail to understand the logic in Vodafone not enabling the new firmware update for the N95 8GB!!!
I see no reason for those who are on Vodafone to have to wait longer to update their phone...
I didn't know Vodafone had any firmware for the N95 8GB I just thought Nokia does all concerning the phone and Vodafone enables me to make calls and txts etc...
Since when does a network provider release firmware updates?
Since when is the software on a phone on Vodafone different from that on 3mobile, for instance?

Network operators have two main objectives:
(1) To sell phones to enable you to use their services
(2) To make money from your use of their services.
In many countries, the network operators dominate the markets for mobile phone sales, which is what gives them the power to demand their own versions of the phone software.
Approving subsequent updates to that software is not a commercial priority from the operators, because they do not make any money for doing it - you already have the phone and you are already using their network services, so their objectives are already met.
This is the downside of getting the phone free or at a heavily subsidised price. I live in Belgium, we have no SIM-locking and operator versions of phones, so we always get the updates on time - our downside is that we always have to pay full price for the phone in the first place.

Will this Desktop computer work for WoW?

Hi I was just wondering if this computer will work for World of Warcraft. It's an
Acer Desktop Computer featuring AMD Athlon II X2 215 Processor (AX3400-E2202)
here's the pro
The Acer AX3400-E2202 desktop PC is built to fit just about anywhere. It's one-third the size of a conventional tower, but is loaded with powerful AMD II X2 performance, 4GB system memory and media features that allow you to power through demanding tasks. And with a 640GB hard drive, you've got plenty of room to store everything.
Product Features
Stay productive and get creative. AMD Athlon II X2 processing and 4GB DDR3 system memory make it a breeze to power through your everyday tasks. Explore the Internet, create documents, edit photos, and play with all of your media with ease.
Store hundreds of photos, songs and files on the 640GB hard drive
Watch DVD movies, listen to music CDs, and burn data to discs with the Super Multi drive
High-definition audio with 5.1-channel surround sound support, brings theater-like surround sound in the home
Front and rear access audio jacks speed up connection of headphones, microphones and other audio peripherals
Quickly transfer files using the 9 USB ports or 9-in-1 media card reader
Pre-installed Windows 7 Home Premium offers a more robust and reliable PC experience than ever before
Here's the link for it to and please reply soon! http://www.bestbuy.ca/en-CA/product/acer-acer-desktop-computer-featuring-amd-athlon-ii-x2-215-proces...
Solved!
Go to Solution.

XFX ATI RADEON HD 4650 1GB DDR2 PCI Express Graphics Card
Model: HD-465X-ZDFR | SKU: 9254585
This graphics card features unified superscaler shader architecture and 1GB DDR2 memory for lush visuals and fluid motions displays.How do you plan to accelerate your life? Get help to choose the right ATI graphics card.
4.7 Read reviews (38)
Sale: $79.99
This one has been proven to work well in WoW. Contact your local best buy for installation quote.
I am a Bestbuy employee who volunteers on these boards on my own time. I am not paid for posting here, and you should understand that my opinions are exactly that - opinions. I do not represent Bestbuy in any way.
: Open Mailbox

C55D-A5108 USB ports underpowered

When I plug in my phone (Galaxy S4) to tether and charge, the port doesn't put out enough juice to charge it up. Instead, it's just enough to make it discharge really slowly. That's better than nothing, but even when not tethering, it takes most of the day to charge my phone. Is there a fix for this?

The culprit isn't Windows or the laptop if you're successfully charging other devices with the same cable from your dissappointing equation.
The USB 3.0 (Blue plug / right pair and closest to the front edge) produces less voltage and my C55's consistently howl if all USB ports are in use while on main battery and connecting hi draw devices to the USB 3.0 port like a single stranded DVD drive.
Is your system power scheme set at HiPerformance, and have you verified the "eco" utility is turned off while experiencing these problems. Notifying me of the handful of rainforest leaves I saved last year by using the dimmest LCD settings and kneecapped CPU stopped being enriching after my grown up teeth started appearing, but its murky supervision of the systems internal power consumption demands being disabled if not uninstalled then prohibited from being installed ever again.
Assuming you've already reset the BIOS default, verified the issue occurs regardless of the USB 3.0 port in legacy 2.0 mode or native USB3 mode and determined the issue isn't occurring elsewhere than the Toshiba, you can start a service call or just ask a WalMart associate if you can test your phone on one of their units.
These inexpensive C55AMD's are invading even Antarctic retailers and gaining access to an unfettered unit is more than easy.

Undervolting X100e: RMclock help?

RMClock worked quite well in reducing the heat on my L625 Dual Core X100e. My stable settings went from:
Stock:
4.0x (800MHz) = 0.8000V
8.0x (1.6GHz) = 0.9500V
Undervolted:
4.0x (800MHz) = 0.6500V
8.0x (1.6GHz) = 0.8250V
That reduced my CoreTemp results from max of 79C down to 68C (at 100% CPU load at 1.6GHz). I'm quite happy with that, as it should improve battery life as well, and the fan is rarely going above it's lowest speed.
HOWEVER!
Since RMclock is not 100% compatible with this CPU, it lists lots of "Index" values (for all the different multipliers or FID values) between 4x and 8x. My question is: Should I use these extra muliplier settings, or not?
In other words... By default, does this processor "ramp" the multiplier (and voltage) up and down between 4x and 8x (max and min) when adapting to demands, or does it just use ONLY 4x and 8x? My fear is that using the adaptive "Power on demand" settings I've created in RMclock, I may be stressing the processor by jumping from min to max voltage so much. But if I do use them, maybe I am asking the CPU to do something it is not designed to do (like run at 1.2GHz).
Any experiences?

Hello,
I have used an X100e (the AMD L625 CPU model) with both 4GB (Crucial CT2KIT25664AC800, two 2GB DDR2-800 PC2-6400 CL6 SO-DIMMs) and 8GB (G.SKILL G2-6400CL6D-8GBSQ two 4GB DDR2-800 PC2-6400 CL6-6-618 SO-DIMMs) of RAM installed and in both cases, Microsoft Windows 7 Ultimate Edition x64 recognized the RAM. After installing the 8GB of RAM, the machine generated a stop error (i.e, a BSOD) when booting up for the first time, but I have not been able to reproduce this since it first occured, and it may have just been a transient issue unrelated to the memory upgrade.
As far as I can tell, you should be able to use any compatible memory, however, if you are concerned about stability or other issues then it is probably best to go with the manufacturer's memory.
I am in the process of setting up Windows 7 Ultimate x64 on the X100e, so it is difficult for me to say if it is "worth" doing as that tends to largely be a matter of software requirements as well as personal preference. It is, however, an interesting project.
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
S230u (3347-4HU) • X220 (4286-CTO) • W510 (4318-CTO) • W530 (2441-4R3) • X100e (3508-CTO) • X120e (0596-CTO) • T61p (6459-CTO) • T43p (2678-H7U) • T42 (2378-R4U) • T23 (2648-LU7)
Deutsche Community Comunidad en Español Русскоязычное Сообщество

Device driver for USB 2

Hello,
Still experiencing major problems with devices. I am a transcriptionist. I use a headset, foot pedal and mouse/keyboard, all plugged in the USB ports.
While using all these devices I continually lose the function of my foot pedal. I deattached the keyboard/mouse, I was able to use the foot pedal. However, I still continually lose function with the foot pedal. It will work for awhile, but then it stops.
I've tried everything. Checked my device manager, unchecked (under power management) not to shut power off to save energy. I have done ALL my updates with windows and hp. Also scanned for hardware changes.
My question is, if I purchased a POWERED hub port, would this help? I would like to be able to use the headset, foot pedal and mouse/keyboard (TOGETHER).
I'm running out of possible solutions. Almost forgot, when plugging in the infinity foot pedal the device software does install.
Please HELP.........Thank you.

Yes it is almost certainly an issue with the computer's ability to provide sufficient power to its own internal usb hub and a powered usb hub will clear that up. You can also try going into the advanced properties of the usb root hub and reset the hub. But the powered usb hub is inexpensive and should resolve the issue. You are putting some pretty big power draw demands on the computer.
My "real" job brings me into frequent contact with court reporters and I see their equipment setups and most use some kind of usb hub for all their devices.
If this is "the Answer" please click "Accept as Solution" to help others find it.

Translucent impromptu possible "hacker" message interrupts current session, locks MacBook Pro screen and demands that I restart by holding down the power button of my LapTop to turn it off first. Any thought? Could this be another way to mess with us?

I was listening to a YouTube video on the history of X15 rocket airplanes. All of sudden, out of the blue a translucent back message drops top down, stops the video, locks up my MacBook Pro screen and demands that I restart my lapTop by first holding down my power switch, then turn the lapTop back on. This has never happened to me before. The message was in black & white, and in about 6 languages: English, French, Spanish, Dutch, Japanese, Chinese. Does any one recognize what this might be?
The Computer turned back on just fine as if nothing had Now I am freeking out that they could be reading my key strokes or something. Could they have used this tactic to install malicious software on my computer by first taking away my ability to do anything about it being that I am not a software engineer? Can any one think of anything simillar? I reported this as a bug to APPLE the regular way, then cleared my Safari cookies, then run software update which returned nothing new as in " your software is up to date at this time."
Can any one please help?
A-NmN.

Hi stedman1,
Thank you so much. This seems to make sense to me now. I was freaking out a bit that some hacker could be messing with my MacBook Pro. I will be monitoring this issue from now on as it has never happened before.
A-NmN.

Trying to restore ipod, demanding I attach to the external power source.

I have been given a 2nd hand 20gb ipod photo, 4g. It would not sync to my itunes, instead it would get about 30 songs in and cancel itself. I have tried to restore the ipod to the original factory settings using itunes and it is now demanding that I plug it into the external power source to complete the restore. I have only a variety of speaker systems, all of which serve to charge other ipods (Nano, Shuffle etc) but these are not being recognised by the ipod, the display of which remains showing a picture of a plug and socket. Can anyone offer some advice as to what to do?

Your iPod is not an iPod Classic and when updating or restoring some iPods via a usb connection, it needs to be plugged into power via the charger to complete the process, and this is why you see this icon displayed.
It's also why older iPods that required this step were supplied with a power adaptor as standard.
You may be able to complete the process via a car charger, or via a powered firewire port on the computer (with the required 6 pin cable of course) if you have access to either of those. Or maybe visit an Apple store if one is nearby.
Or you can try this.
No power adaptor? Try this.
Other than that, your iPod cannot be used until you complete this process.

Error encountered while doing on-demand refresh of Power BI report

When I try to manually refresh a PowerBI excel that has been uploaded on to SharePoint, I get this error.
"OnPremise error: Sorry, you don't have permissions to retrieve data for this data connection. Request access from your Power BI admin. An error occurred while processing table 'Reference Data'. The current operation was cancelled because another
operation in the transaction failed. "
It has been verified to us that the data management gateway has been approved and we have made sure that the credentials and the database details to connect to the On-Prem instance are the same as specified.
THe correlation ID is 8eb7c217-f62d-4137-a648-5df57937058e

the error is talking about the permissions to the data source, in the PBI admin center, per data source you need to specify who (O365 user) can access it, maybe this is the source of your problem?
GALROY

Power on demand

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