Incompatible mode issue with 50" Vizio

I hope this is the right place for this question.
OK, I've been doing this stuff so long that when I encounter problems like this I worry I'm just missing the obvious.
I have been running my older Intel Mini (1.66 core duo) to my 50" Vizio plasma, via the DVI/VGA adapter, as part of my A/V system for over a year now, and it has worked absolutely flawlessly from the day I plugged it in. Beautiful image, everything perfect.
This past weekend I had a couple friends over and when I was out of the room one of them (the only one with a Mac of his own) switched resolutions, and the screen went black with a message saying "incompatible mode." He swore he didn't get the message about switching resolutions, etc, that you usually get when switching resolutions. I cannot now get any image to display. It was displaying a resolution of, I think, 1360 x 768 @60hz.
If I plug another monitor into the Mini it works fine. If I plug my MBP into the Vizio it works fine in either mirroring more or as dual displays. I have a second user on the Mini, and if I boot into that user the Vizio works fine. But no matter what I do I can no longer get an image to display on the Vizio in the main user profile, I just get the "incompatible mode" message.
When I boot into the main user I get the usual gray boot screen with the Apple logo, which then blips to a blue screen for about 10 seconds, which then goes black with the incompatible mode message generated by the Vizio. I have also tried booting into the second user (which as I noted works fine), then by using "fast user switching" going into the main user, but as soon as the image swings around the screen immediately goes black with the same old "incompatibe mode" message.
I was thinking maybe it was a preferences issue, but the only display preferences I can find are in the "Byhost" folder in the user preferences folder.
Is there something I'm missing? Is there a way to cycle through resolutions blindly via the keyboard? Are there other preferences that I'm not finding? Any insight into this would be greatly appreciated.
I didn't think this question would be so long. Thanks for reading, and thanks in advance for any help.

when I changed the setup at printer level to 17CPI; my report content got shrink-ed to 50%. I tried to change the main section width in report builder from 80 to 102 and stretch the fields but no effects to output. What are the steps you followed to change this setup?
Did you modify the initialization string in the printer driver as mentioned in these docs? Did you bounce the CM after doing the necessary changes?
Oracle Applications Character Printing [ID 112172.1]
Building a Printer Initialization String for Oracle Applications [ID 152285.1]
Pasta Overview [ID 420019.1]
Thanks,
Hussein

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Full screen mode - Issue with Aperture freezing

Hi I have an issue with Aperture 3 freezing if I send an image to a plug-in or external editor while in full screen dual display mode. I have to exit full screen mode first and then send to photoshop/external plugin.
It is not a huge deal and a simple workaround but if I forget to do it Aperture will freeze and I will have to force quit the application.
Any thoughts or suggestions welcome.
Thanks!

Just send a comment to Apple via "Aperture→Provide Aperture Feedback".
IME, both full-screen mode and dual-display mode have some rough edges. (I don't expect any improvements until OS 10.7, which is widely reported to include a full re-design of full-screen mode.)

Sleeping mode issue with mountain lion

Hi,
I am using a MacbookPro with an external monitor. Since I've upgraded my OS system to Mountain Lion, whenever I close the lid, the Macbook is still running and doesn't enter into a sleeping mode like it used to do on SnowLeopard. Instead the external monitor will stay on and act as the main the monitor. Is there anyway this could be fixed?
Thanks

This is because while you've re-installed the system, you've preserved the user account.You need to do a "clean" install meaning a reformat and install. If the Mac orginally shipped with Lion or ML you can redownload via Recovery Partition but if the Mac shipped with Leopard 10.5.x or Snow Leopard 10.6.x then you need the OEM discs that shipped with it. You can call Apple and they will send you the discs for a nominal charge.

Oracle Reports(Character Mode) issue with 17 CPI ---URGENT

Hi,
I am in-process of Character Mode report development for Purchase order. Report is working perfectly with Font Courier and 10CPI. Now Client wants report with 17 CPI; when I changed the setup at printer level to 17CPI; my report content got shrink-ed to 50%. I tried to change the main section width in report builder from 80 to 102 and stretch the fields but no effects to output.
Please suggest me the correct approach to get output as per pre-printed stationary in 17 CPI.
Regards,
Shishir

when I changed the setup at printer level to 17CPI; my report content got shrink-ed to 50%. I tried to change the main section width in report builder from 80 to 102 and stretch the fields but no effects to output. What are the steps you followed to change this setup?
Did you modify the initialization string in the printer driver as mentioned in these docs? Did you bounce the CM after doing the necessary changes?
Oracle Applications Character Printing [ID 112172.1]
Building a Printer Initialization String for Oracle Applications [ID 152285.1]
Pasta Overview [ID 420019.1]
Thanks,
Hussein

Anyone seeing horizontal-scroll-mode issues with Terminal.app?

This is more a broadcast of findings than a question, but:
Related to things here (that is closed/archived):
https://discussions.apple.com/message/10061606#10061606
It looks like the version supported locally of bash/readline are working for Terminal.app's default TERM=xterm-256color; however, when sshing to RedHat Enterprise Linux, something goes "sidewasy."
If I'm seeing things correctly, it looks like the default TERM of xterm-256color isn't well supported by... bash? readline? If I leave TERM as default (?) of xterm-256color, then the readline/inputrc config for `set horizontal-scroll-mode Off' is ignored, and I get the hated (by me) horizontal scrolling. If I:
export TERM=xterm-color
in the same session, changing nothing else, and then arrow back "up" into history, I get (my) preferred "vertical" scrolling of my long input command. Are others seeing this?
So, it really looks like earlier versions of bash (before 4.x?) and/or readline (before 6.x?) don't properly support xterm-256color as a valid TERM, and must fall down and assume that the terminal doesn't support things like.. uhh... horizontal-scroll-mode Off. Seems to be fixed by RHEL-6, but a problem in RHEL-4 and RHEL-6.
I'd originally, mistakenly assumed it was a bug in Terminal.app.
Again, this doesn't have to do with a Terminal.app session *local* to the Mac itself; but rather if you've ssh'd to a different operating system.

It is possible that the problem is in the terminfo terminal feature description file for xterm-256color on your Linux systems.
/usr/share/terminfo/x/xterm-256color
You can examine the contents of the Mac and the Linux xterm-256color terminfo files using:
From Mac:     infocmp xterm-256color >tmp.mac
From Linux:   infocmp xterm-256color >tmp.linux
...copy the files to the same system...
Compare:      gvimdiff tmp.mac tmp.linux     # or just use diff if your prefer
Actually you may be able to do the compare with infocmp, but I have not experimented with that, and I know how to do the above already, so I went with what I know :-)
You can modify the infocmp generated output, and then compile a new terminfo file using 'tic' (man tic). Then again for all I know, the binary format for a terminfo file is identical on Macs and Linux boxes, so you might be able to tranfer the Mac version to your Linux system(s).
You can use the TERMINFO environment variable to point to a different terminfo database. See 'man 5 terminfo' for more information.
Again, all of this assumes that maybe it is the terminfo term-256color file that is different between the 2 systems.

ATTN: Apple Mods - Issue with Apple Support Log-In

After log-in this appears:
500 Servlet Exception
java.lang.NullPointerException
at jsp._error__jsp.jspService(acincludes/../accountbox.jsp:50)
at com.caucho.jsp.JavaPage.service(JavaPage.java:60)
at com.caucho.jsp.Page.pageservice(Page.java:570)
at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:179)
at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java: 115)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229 )
at com.caucho.server.webapp.RequestDispatcherImpl.forward(RequestDispatcherImpl.ja va:277)
at com.caucho.server.webapp.RequestDispatcherImpl.error(RequestDispatcherImpl.java :113)
at com.caucho.jsp.PageContextImpl.handlePageException(PageContextImpl.java:1066)
at jsp._main__jsp._jspService(_main_jsp.java:1801)
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at com.jivesoftware.util.SetResponseCharacterEncodingFilter.doFilter(SetResponseCh aracterEncodingFilter.java:58)
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Resin Professional 3.0.23 (built Mon, 22 Jan 2007 02:25:17 PST)

Hi Darksol360,
just FYI, there is a whole Forum dedicated to Discussions Feedback.
http://discussions.apple.com/forum.jspa?forumID=1076
It is better to post such things there.
Have Fun
Stefan

Security Issues with iMac OS X

I thought that with previous OS X versions, the problem was bad enough when you set the 'Stealth Mode' to 'On' & the status was not reflected within the System Profiler utility.
Now it seems more security blunders....You're able to amend Login Items, e.g. select &/or deselect items (within System Prefs, User Accounts) without being asked to re-enter the users password or keychain password. If someone gained access to a users computer/account (even if it was padlocked) then they're able to amend/delete/select/deselect anything in the 'Login Items' list.
Yet another major security blunder from Apple & I remember it took them months, if not years to resolve the 'Stealth Mode' issue with previous OS X versions.
Since UNIX is/was meant to be one of the most powerful & secure computer operating systems, they've made it look pretty WeaK!

Now it seems more security blunders....You're able to amend Login Items, e.g. select &/or deselect items (within System Prefs, User Accounts) without being asked to re-enter the users password or keychain password. If someone gained access to a users computer/account (even if it was padlocked) then they're able to amend/delete/select/deselect anything in the 'Login Items' list.
Well duh. That's a bit like saying if someone can start your car then they can change the radio station. If a person has hacked your account to the point where the can amend the Login items list then that is not a security issue, in fact that's the very least of your worries. If they have that kind of access to your machine then they have everything, your data, your passwords, the whole shooting match. So, I wouldn't worry too much that the can remove an item from your Login list.
So, not a security issue, not a blunder. You need to worry about something important.

Performance Issues with Debugging even in Display Mode

Hi not certain if this would sit in Security, ABAP or Basis, but lets start here as it is security related.
S_DEVELOP with any activity on DEBUG on a production system is a concern, but what are the performance related issues when a super user has to go into debug in display only on a production system because of a really complex issue?
I've heard in the past of a scenario where system performance was impacted, and we have notes around the allocation of S_DEVELOP display DEBUG access to this point. (I've summarised these below)
The risk with debug is associated with the length of time that the actual debugging process is being performed.
u2022 Work processes are dedicated solely to the users for the duration of the debug. If these are being performed for a long time, these can cause issues with not enough work processes being available.
u2022 It can cause DB2 locks. If the debug session last awhile, DB2 locks are not released. This impacts the availability of tablespaces, thus, affecting various transactions running across the system.
Even with these concerns, security will often get asked for debug display access.
As security is about risk identification, assessment and then controlled access what do other organisations do?
Options (not exhaustive) are "No Debug ever" or "Debug display only via a fire fight or super user on a time limited basis".
We are currently in the "debug display only via fire fight" camp, but would like to canvas opinion on this.
As one of the concepts of security is Availability of data (and to an extent ensuring the systems are up and running) do the performance risks push the security function to the "No Debug Ever" stance.

If you need to debug in production, then 9 times out of 10 you need to do root-cause analysis: The developer is the problem.
Writing sloppy code and not testing properly should not be an excuse for debugging in production.
But of course, there are exceptions even when you do try to keep them to a minimum.
To add to Jurjen's comments, also note that the debugger only has a limited capability of doing a rollback. So you can quite easily and unintentionally create inconsistencies in the system - also in display mode - which is an integrity problem, and typically more critical than availability problems or even potential confidentiality concerns.
Cheers,
Julius
Edited by: Julius Bussche on May 15, 2009 10:50 AM

Performance Issues with Acrobat Reader 11.0.0.2 when secure mode is enabled

Hello All,
We are experiencing sporadic issues with Acrobat 11.0.0.2 across our domain, users are reporting performance issues when opening PDF documents whether locally or from a network share.
We have found that turning off Secure Mode helps towards reducing this delay and in the cases it doesn't we are repairing the installation and/or reinstalling the application.
Due to the security implications we need to leave this turned on, I am wondering if anyone has encountered this issue and what steps were taken towards resolving it?
I also wonder whether the white list function in the new release 11.0.0.3 would be a solution to this issue?
Kind Regards,
Ryan McCarty

No probelm, so....
We had no problems with Adobe Reader 9 and 10, we encountered the issues when upgrading to 11.0.0.2.
Initially we found that turning off the Protected Mode, helped but did not resolve the issue.
We tried;
1. Turn off protected mode - issue still present
2. Clearing the recent file registry using the below registry path and deleting the keys underneath it.
HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\11.0\AVGeneral\cRecentFiles (this does not turn recent files off permanently). - works but needs clearing regularly
3. Turning off welcome screen by creating - HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\11.0\FeatureLockDown\cWelcomeScreen - works to improve app open speed.
4. uninstall/reinstall of 11.0.0.2 - works most likley due to the recent files being cleared.
5. upgrade to 11.0.0.3 - issue still present
Following reboots the issue is still present.
When Adobe Reader is the only application open this issue is still present.
As mentioned I have no systems available which I could test this issue using 11.0.0.1 as we have fixed them, albeit temporarily using the reinstall method.
I am concious that this issue is going to reoccur once that cache (recent files) builds back up because the fix above (#2) is clearing the recent files cache NOT disabling it.

Issue with OBIEE 10.1.3.4.2 in MUDE mode

Can any one help me in getting bug list of OBIEE 10.1.3.4.2?
Actually we are experiencing issues in using MUDE. When creating any new logical or use any physical objects by creating alias to it we get issue with the newly created objects. Hence we are not able to merge the changes to the original RPD. Though we are able to achieve the same in non-MUDE mode (offline).
Is there any restriction in 'Projects' that we create for using MUDE that no new objects are to be created and only existing objects to be used? Or is this a fresh bug in 10.1.3.4.2?
Edited by: Vishnu Ramakrishnan on 02-Apr-2013 08:12

Mud Check In Fails [ID 1271010.1]
BUG:9968358 - OBIEE MUD CONSISTENCY ERROR WHEN MERGING
Hope this helps.
Thanks,
SVS

USB 2.0 issue with sleep mode--help!

hey there,
so i've searched this forum's board and found that it seems quite a few people have had issues with USB 2.0 and sleep mode on the mac. most of what i read, however, comes from people not being able to put the computer to sleep once new USB 2.0 cards or devices are installed. that is not the problemm I seem to be having, but is this:
I recently purchased a Belkin USB 2.0 PCI card, and installed it on my MAC G4 tower. It seemed to work ok for a little while, but then i noticed that AFTER i put the computer to sleep, when it 'awakens' from slumber, it no longer reads the USB devices. if the device was plugged in prior to sleep mode, it sometimes reads ok. but if I try and plug in a new USB device, such as an iPod or flash drive, no dice. it doesn't mount on the Mac.
I called Belkin tech support, and they were very helpful, but told me that the macs have had issues powering the USB PCI card once the computer is in sleep mode. they even directed me to an apple support page that has downloads that seem to address this, but they're for 10.0-10.0.4. I don't want to download that onto my mac (10.3.9) cuz im worried it might screw something up on my OS.
I would LOVE a download link for a software updater for this if someone knows where it is, otherwise, I may have to return this thing to Belkin and go with a more mac-friendly brand. so im open to that possibility, too.
any help would be GREATLY appreciated!!
cheers,
the quid pro
Power Mac G4 Mac OS X (10.3.9) Dual 1Ghz, 1.5 GB SDRAM

I would either complain to Belkin for a fix if there is one or return the card and try a different one. You should not have the problem, but Belkin USB hubs and cards appear to have more problems like yours than other manufacturers' products.
You might try Sonnet's Tango FW400/USB 2.0 multi-card, for example, or Firewire Direct's 6-port FW800/USB 2.0 card.
You may also want to check this page for some user reports on related products.

Kindle Fire & Adobe Air issues with scaling & bottom menu - GPU Mode only

Hi,
Long post ahead, please buckle down for a while.
I'm having issues with the Kindle Fire and the bottom 20 pixel menu in GPU mode, CPU mode behaves correctly. The project was created with flash cs5.5, the stage size is 1024x600 and I've set the NO_SCALE flag. When the app is run on the Kindle Fire the Kindle scales it to 1024x580 for the bottom 20 pixel menu. If I create the project as 1024x580 it still scales it down and then centers it vertically introducing a 10pixel black bar at the top and I would assume a 10 pixel black bar at the bottom under their menu. In CPU mode the app is not scaled and the bottom 20 pixels is obscured.
The problems I have encountered so far are incorrect mouse locations as reported in various mouse events. Messed up scrollRects when I try and clip something for display. Not being able to press buttons because of the incorrect mouse coordinates, the further down on the screen the more incorrect the buttons are. You can click below a button near the bottom of the screen and have it activate whereas a button at the top acts perfectly. This is due to the accumulated error value from the yPos * scaleValue.
The mouse positions are off exactly by a scale factor of 600 / 580 (1.034).
The video below shows the problems, sorry for the poor video handling. The red line in the video is drawn in the center of the y position detected on a mouse move and mouse down event, but shifted to the left for visibility. The center of that stylus is where it should be at all times, as you can see it isn't. You can also see displayed the buttons not working correctly, they are clearly being activated when the press on the screen is not over the button (indicated by the red line).
The circle in the middle of the screen has it's scrollRect set to to the width and height of the circle, as you can see it is clipped.
At the end of the video I press the power button then press it again to unlock, you can see the screen looks good for a split second then gets resized. Once resized the circle becomes clipped again. If I were fast enough I would assume the buttons would work correctly as well. Watch closely, it happens fast.
Oh, and the app works fine on the desktop in either GPU or CPU mode. The app also works fine in GPU and CPU mode on my iPad2, Google HTC Nexus One, Nook Color and my 4th gen iPod Touch.
Now whos issue is this? Adobes, Amazons or mine? I know what the problem is but don't know how to fix it.
Youtube video link:
http://youtu.be/660O3YMK9k8
Thanks for your time!
PS: if anyone wants the .fla for testing themselves, just ask and I will post a link to it.

I'm going to forward this along to our android team for their review. In the meantime, could you open a bug on this over at bugbase.adobe.com? Please post back with the URL so that others affected can visit the bug and cast their votes.
Thanks,
Chris

Issues with video playback, messed up shuffle mode with playlist sharing

I have a Mac (10.4.7) and a PC (XP SP2)... both are running iTunes 7 downloaded on September 12. All of my media is on my PC, and I do playlist sharing with my PowerBook across mu home network. A few issues with iTunes 7 that didn't exist for me in iTunes 6.0.5:
- Video playback is like multicolored TV snow. This happens on my PC as well as when the video is shared to my Mac.
- When sharing the music to my Mac, and I'm listening in shuffle mode, many times the same song will play twice in a row.
- I've only had this happen once so far (in the last 24 hours), but again I was listening to music shared to my Mac. One song played, then started to play again for the second time in a row. The song played for about 15 seconds, then jumped into another song. After that song was over, it jumped back and played the last 15 seconds of the previous song, all while having a completely different song highlighted in iTunes with the track position set to 0:00. It was very, very odd.
Frankenstien PC/PowerBook G4 Mac OS X (10.4.7) Windows XP Pro SP2

The first issue is resolved by http://discussions.apple.com/thread.jspa?threadID=639597&tstart=0
Any other ideas?

I am having issues with MLBtv, when I switch on my ATV it no longer comes up as an option nor does vimeo or the iTunes store, i've tried resets etc and after those they appear. put the tav into sleep mode and mysteriously they don't re appear. Any ideas?

I am having issues with MLBtv, when I switch on my ATV it no longer comes up as an option nor does vimeo or the iTunes store, i've tried resets etc and after those they appear. put the tav into sleep mode and mysteriously they don't re appear. Any ideas?

I am having the same issue but mine is with Netflix. And there are only 4 categories now on the main menue when there used to be 5. Something went crazy with ATV software.

HT3131 Are there any ventilation issues with running a macbook air in clamshell mode?

Are there any ventilation issues with running a macbook air in clamshell mode?

...that makes sense to me.
but, why do so many MBA users (on this forum and others) claim that ventilation occurs through the keyboard? Is this claim based on an old macbook design?
for example, here's a related discussion (although fairly old):
11-08-2010, 12:16 PM
#6 (permalink)
SP Forsythe
Notebook Evangelist
Join Date: Jul 2007
Location: California
Posts: 660
Rep Power: 14
Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
Quote:
Originally Posted by tHE j0KER
Actually I you shouldn't close the lid while running on an external screen. The keyboard of the Macbook is an air intake for the fan. Close the lid, and it could overheat.
A common misconception of unknown origin. The intake and the exhaust for the cooling fan on the 13" MB and MBP are both located on the rear slot at the base of the hinge. In fact, you can actually see the divider that separates the intake flow from the output flow. If it were through the keyboard crevices, then an awful lot of overheats would result from people using impermeable keyboard covers, as well as Apple's warranty department would be flipping out over the Apple store carrying such covers. iSkin ProTouch FX Keyboard Cover for all MacBooks - Black Printed Keys on White - Apple Store (U.S.)
Does one think that Apple sells these only for use when the Notebook is off??? http://store.apple.com/us/product/TW...co=MTM3OTUwMDE Closing the lid, whilst operating the unit actually results in cooler operation due to reduction in power consumed by operating the display, which in supporting the on-board display generates heat far greater than simply powering the video port..
Does one think that Apple sells these for use only when the MacBook is off? http://store.apple.com/us/product/TW...co=MTM3OTUwMDEApples direction for use is specifically for when using with an external display.
Currently using:
Apple MacBook Air 13" mid 2011 1.8GHz Core i7 4GB 256 GB SSD Lion & Ubuntu Linux via Fusion
MacBook Air 11.6" late 2010 1.6 GHZ, 320M, 4GB 180 GB SSD Upgraded OWC), OS X Lion
11-08-2010, 02:34 PM
#7 (permalink)
ajreynol
Notebook Virtuoso
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,542
Rep Power: 18
Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
once again, I've tried a few of these keyboard covers. the Moshi keyboard cover is the ONLY one I can recommend. the others are too thick or change the keyboard experience too much.
17" Apple MacBook Pro | i7 2720m | 160GB SSD + 750GB | 16GB | HD 6750M 1GB
Dell 435MT | i7 920 | 10GB RAM | 7.64TB HDDs | HD 6970 | Win7+SL
HP Elitebook 2710p Tablet PC | 1.8GHz C2D | 4GB RAM | 160GB HDD | X3100
Apple iPhone 4 32GB | Apple iPad 64GB (Gen 3)
Stop random laptop wakeup | 5K500.B bench data | How to Disable PowerMiser
Disable Vaio beep when pressing volume or special keys
11-08-2010, 03:34 PM
#8 (permalink)
doh123
Without ME its just AWESO
Join Date: Feb 2009
Posts: 3,282
Rep Power: 22
Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
1. Closing the cover will cause more heat. This is not because of covering the keyboard very much (though it does help some heat be retained). It's mainly because of the shape of the hinge and the fact when closed it covers up the back vent a lot more. For the best cooling, it is best to have the screen open. Just run it as a dual monitor, but make the external the Primary monitor, and if you don't want to use the built in, just turn its backlight off and don't use it.
2. The thing you plug into the wall is not a battery charger. The actual "charger" is built into the computer. It knows when to charge and when not to. If the little light on the power plug is amber, then its charging your battery. When its green, its just powering the laptop and NOT charging your battery at all.
Mac OS X Gamer/Porter
(We do exist!)
Wineskin 2.5 is available!. Turn Windows apps into Mac apps for free!
11-08-2010, 03:38 PM
#9 (permalink)
Wolfpup
Notebook Virtuoso
Join Date: Jun 2007
Posts: 3,871
Rep Power: 28
Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
I'd leave the lid open, at least partially...yes it may be fine not doing that, but you are making heat dissipate worse, of course could even theoretically hurt the screen.
As for the battery...well there's really only two choices, have it plugged in or not. As others mentioned, you can't overcharge the battery. It can be damaged a bit from heat, but of course the number one thing that's going to damage it is discharging it...so it's a no brainer-use it plugged in whenever possible, and try to charge it whenever possible when it's not plugged in.
11-08-2010, 03:45 PM
#10 (permalink)
SP Forsythe
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
Quote:
Originally Posted by doh123
1. Closing the cover will cause more heat. This is not because of covering the keyboard very much (though it does help some heat be retained). It's mainly because of the shape of the hinge and the fact when closed it covers up the back vent a lot more. For the best cooling, it is best to have the screen open. Just run it as a dual monitor, but make the external the Primary monitor, and if you don't want to use the built in, just turn its backlight off and don't use it.
Nope. Apple would disagree with you on that one. Any "closure", which is, when compared to the amount of CFM, is insignificant. In fact, the opening size remains the same. it is only deflected at a slight angle when the lid is closed. Tilt your MBP and see. As well, shutting down the display lowers the heat being generated, even in the lower case. As I said, if it were a problem, Apple would not be selling stands designed to operate your unit in the closed position as the original poster of this thread proposes to do.
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