Radeon power management: can't write to /sys/class/drm/card0/device/

I'm trying to enable power management for my Radeon X850 using the open source driver and am failing miserably at it.
The wiki informs me to do this:
# echo dynpm > /sys/class/drm/card0/device/power_method
which results in my computer telling me that I'm a complete and total loser:
bash: /sys/class/drm/card0/device/power_method: No such file or directory
I don't quite understand the whole "/sys" directory, and I feel like I'm missing something simple. Does anyone have a suggestion on what to do?
That section in the wiki article seems to be a little confusing, as if it's a combination of confusing and outdated instructions. Do I need to use the special [radeon] repository to get power management? What does it mean to "select the methods via sysfs"?
Thank you.

Similar Messages

In Profile Manager, Can I assign users to ONLY a specific Device Group?

In profile Manager (Lion Server 10.7.3) I created DEVICE GROUPS per Lab, and each Lab has a manager. I want to give each manager permissions to see and manage ONLY their devices. Is this possible?

I'm not sure this was ever designed to be user friendly as typically only Admins or those with elevated permissions would see these groups. There isn't as far as I can see, any way to add this step within a Wokflow too, unless you're able to install
some third party steps.
Steven Andrews
SharePoint Business Analyst: LiveNation Entertainment
Blog: baron72.wordpress.com
Twitter: Follow @backpackerd00d
My Wiki Articles:
CodePlex Corner Series
Please remember to mark your question as "answered" if this solves (or helps) your problem.

Life without Lenovo Power Manager: Any thoughts? [battery issue, charging error]

A while back, we discovered the battery maintenance error, where the "stop charging at 90%" feature would cause the battery to only charge partially to like 50% but read that it was fully charged, and then it would turn off early. This was the thread. I know it's a BIOS issue, and I will update eventually, but the partial charge happened to me again, and it got me thinking:
Do I really need the Power Manager?
I use the Power Manager to configure Turbo Boost clock speed and all that, and I suppose the Turbo+ button does crank up the fan, but I can use TPFancontrol to manually control the fan, and I found that Windows power settings by itself allows me to set the clock speed however I want, using a percentage. Setting all the numbers at 45% parks the clockspeed at 1.2GHz, a good compromise for battery life and performance. The best Power Manager can do is to cycle between 700Mhz all the way up to 2.7Ghz, which throws battery life out the window.
So, will I lose anything by just uninstalling Power Manager?

Technically the answer is no, Power Manager is optional. However, it is a good option for Windows 7 users. It does expose more power management to the user than the power settings under Control panel.
Until they release the Windows 8 version and I run it for a few weeks, I won't know what to say about that environment.

Compact 7 Power Management: When does state change back to ON from User or System Idle?

OS Design: Compact 7
Headless system
BSP: AM335x (ARM7)
Using Full Power Management Catalog component.
Run Telnet to interact with device and through serial terminal app.
With monitoring app can see transitions from ON to UserIdle to SystemIdle due to Activity timeouts.
Can manually set mode back to UserIdle or ON.
But never see transitions back when loading system with software or network activity.
eg. 1 Create a loop forever app with two internal forloop (1000 loops each): Runthis on numerous telnet sessions<
Can see system degrade as responsiveness decreases.
eg 2. Continuously ping another system or from another system (network load)
So what is need to trigger a PM state transition back up the tree?

Thanks Dave for your reply.
That's what I am looking at doing.
But I'd like to see the inbuilt functionality working first. I can see the transitions down the stack due to Activity timeouts, but I would have thought the reverse would occur when the system does something.
I do have an app that "touches" the PM and thus bring the system back to ON.
Cheers David
DJaus Snr SW Dev (Embedded Systems and .NET)

Where can I find XP x64 drivers for Portege R500 - hotkey / power management?

Where can I find downloads that will enable power management or hotkey support for my Portege R500?
I have already installed drivers for everything except fingerprint reader (don't want), tpm (really don't want), and hdd motion sensor (tos620a) (not bothered about right now). Most drivers are latest from original vendor websites, or, failing those, from Toshiba's Vista 64-bit download areas.
Everything else generally works: wifi, graphics & chipset, sound, lan, bluetooth stack, cardbus, card reader, etc.
However, having done this, the following issues remain:
FN hotkeys don't work for suspend to ram, suspend to disk, *screen* *brightness* - essential to extending lifetime; FN hotkeys for numeric/direction pad, external monitor toggle *do* work
Dedicated backlight toggle button doesn't do anything
However, in order to get battery lifetime beyond ~2.5 hours and closer to the rated 7.1 hours, I'll need to turn some things down / off occasionally. What software can help and where can I get it, such that it works on Windows XP x64 edition?
Note:
I have tried the xp 32-bit packages that Toshiba supplies, they don't appear to work on x64. The 'ctrls' package requires 'cmod', but 'cmod' gives this error:
TOSHIBA Common Modules Setup
Not an ACPI machine. Cannot install TOSHIBA ACPI Logical Device.
OK
I have tried the xp 32-bit package called 'pwrsav'; it installs a bad help link to my start menu, and adds a couple of exes, tpsmain and tpsoddctl, to my auto-runs. These 32-bit executables quit immediately after execution.
I would have tried to install Toshiba's Vista 64-bit packages for hotkeys / common modules / power management, but the only one of the three I can find via toshiba.co.uk are common modules, and unfortunately that zip file only contains .inf, .cat and .sys files, no installer.
Motivation:
I'm using a fresh install both because the default Vista install is unusable (900MB memory used on a fresh boot desktop, drive split into multiple partitions, trial, adware and broken software installed left and right)
I'm using x64 because I'm a software engineer whose next product needs to work on x64, and this new laptop was a likely first candidate

You didn't link to the tool you found. If you meant this tool then, you should be aware it doesn't work on x64 on R500:
Display Tuner
Cannot detect monitor!
Your monitor does not support DDC control or your videocard is not supported by Display Tuner.
You cannot use Display Tuner in this configuration.
OK
It would be unlikely to work in any case, as display driver brightness isn't normally the same as the screen's brightness (hence power usage).
Maybe it's a communication issue, but I *have* found +original+ drivers for all essential components, just not for things like screen brightness - something that, to be honest, I more expect to be handled in firmware / bios, as that's been my experience on previous laptops, and is more reliable in any case, considering I could be running an oddball Linux or a completely different OS, or a CPU-intensive high-priority task.
The R500 series seem to be scrimping on the firmware and expecting OS utilities and dedicate yet another system tray icon to take over that job.
It does look like x64 is a no-go for mobile use on this machine, due to lack of firmware power management, which is a great pity as the point of such a light machine is mobility. I'll wipe it and install XP 32-bit and see how that goes.

Can't get R&R or Power Manager to work under upgraded Win7 on X61

I recently upgraded my X61 from Win Vista Business to Win7 Pro. While doing so I installed the new and supposedly Windows 7 compatible versions of R&R and Power Manager. However, I can't seem to get either to work - I can't even start the applications. Both immediately crash and tell me that "Lenovo Application has stopped working" (R&R) and "Power Manager has stopped working." I do get the power gauge in the task bar, but I cannot click it (same error/crash).
I followed the instructions and have therefore updated all the applicable drivers etc, e.g. the new version of CSS for R&R and the Power Management Driver for Power Manager, but it still doesn't work. I've also tried reinstalling (both uninstall followed by install and repair/reinstall). Does anybody know what's going on? What could be wrong?
Is anybody else experiencing the same [kind of] problem? Are there any solutions?
Thanks!
Per Bylund
Solved!
Go to Solution.

I believe I've found the reason for the problem I had with both R&R and the Power Manager (also discussed here): I did not have .NET framework 3.5.1 SP 1 installed. It is obviously disabled by default on Win7, so one will have to enable it through Control Panel -> Uninstall a program -> Turn Windows features on or off (and then make sure to check the Microsoft .NET Framework 3.5.1 check box).
The strange thing is that I have not found the information that .NET framework is required anywhere - Lenovo obviously didn't think of supplying it. I just happened to find the solution when installing the upgrade for the Lenovo Toolbox, which could not be finished without first installing the framework (and the Toolbox installation program told me this was required).
So make sure you have the .NET framework enabled if you want to run a bunch of the ThinkVantage applications!
Per Bylund

I have an iMac G4 PowerPC with OS 10.5.? The OS10.5.8 update failed. Now get blue screen and error-can't find Intel Power Manager. What now??

I have an iMac G4 PowerPC with OS 10.5.? After deleting 17G of music files to make room on the 74G drive, The iPhoto and iWeb updates seemed to load okay, but the OS 10.5.8 update failed - message opened said the computer encountered an error and must shut down. Now I get the blue screen. Startup with 'V' pressed shows multiple lines saying: error-can't find IntelCPU Power Manager. What now?? I reset PRAM, I think.....?????

I am concerned that you might have applied a system updated intended for an Intel iMac, while you have a PPC (non-Intel) iMac. Your PPC OS should not be looking for an "IntelCPU Power Manager."
Have you tried booting from the 10.5 install DVD/CD and repairing the hard drive, plus repairing permissions?
If you done the repairs mentioned above, and your problem still persists, you can also try doing a safe boot. (see http://support.apple.com/kb/HT1455 ) Then, if none of these things worked, if I were in your shoes (it's hard to diagnose these things without being there in person) I would first check that there is adequate disk space, then I would boot from the 10.5 DVD/CD install disk and reinstall the operating system. There is an option to do an archive and install preserving user files/settings, that would be the option you want, as it will save your files but install a new OS. Make sure you have a good backup of your files first. If you do not have one, use "target mode" to copy all your files before embarking on an new OS install. Assuming that you do succeed with this install, then use Software Update to get the right updates for your iMac.

After a one week logout and shutdown my macpro 1,1 laptop shows a black screen at startup attempts. The battery is fully charged and both resetting the power manager and zapping the PRAM have failed to permit startup. What else can I try?

After a one week logout and shutdown my macpro 1,1 laptop running OSx 10.6.8 shows a black screen at startup attempts. The battery is fully charged and both resetting the power manager and zapping the PRAM have failed to permit startup. What else can I try?

Startup – Black screen with cursor
Startup Issues - Resolve
Startup Issues - Resolve (2)

I need a new power management board for MacBook Pro.   The AC 7000 chip is blown from power serge. Where can I get one in Fiji?

Where can I get my power management board repaired ...replace the AC7000 chip ( that now has a little hole in it from a power serge ) or replaced in Fiji?

Actually, this is how I do my projects   . . . I pull together all the assets (video clips, stills, graphics) and tag them in a database. Then, I can pull them into various segments.   I learned the ctrl+m five years ago when it was suggested on the old forum by some guy named named Steve Grisetti.
Example - - - I've done multiple soccer videos. There are maybe 16 players on a team... each is a tag.   There are great headers . . . that's a tag . . . don't forget awesome defensive plays . . . tag.   A tag for screwups / funny.    A tag for regular season play, a tag for post-season playoffs, etc.
This allows you to build it as you go.   So, as you start to compile a season end video, it's relatively simple to pull content.    Oops, you review the segments and see that one kid's hardly included... select the tag with their name and you can pull in a few more clips.   If you're documenting a season, you can see how the database is coming along and determine you need more footage of certain situations and then adjust the shooting priorities at the next couple games, etc.
As you build the collection, possible themes come... perhaps a song or two that might add an element or tie things together.
SO... goal is to assemble a collection of decent and tight clips (leaving room for handles on each). Tossing out all the superferlous stuff.    In shooting a 90 minute soccer game, there can be times when I end up with only ten minutes of visually interesting stuff.
I'm also compiling content to be used in a video for a cool company here in Seattle.   Different thing altogether, but will take a similar apporach (fewer digital assets, however).
I don't usually take assets from one project and put onto another . . . especially when doing youth sports, this could create issues.

T61P XP/SP3 - Power Manager Problems, Can't save schemes, limited schemes available

Hi All - When I got this -rockin'- laptop originally I could set my own power schemes without problem. Now it won't save my new powerschemes. I try to create one, finish the last step, and then the power scheme isn't in the dropdown. I read somewhere on the Web that this may be related to SP3.
Also, the only Power Schemes I have access to are Video Playback and Maximum Performance. I have tried uninstalling Power Manager and the associated DLL and then reinstalling, but that didn't help. Also, I see no reference to this problem in troubleshooting. Thanks in advance. This is getting really annoying as I like to use as little power as possible since I use teh computer on battery power quite often.
Thanks! g-
Solved!
Go to Solution.

First, don't mark an item solved if it's not solved. Second, learn to search to see if others have had this problem. instead of repeating a post that's been beaten to death. Hint: Lots of us have had the problem .
If you had searched you would have found this link: http://chris.brandlehner.at/Brandlehner/cab_blog.nsf/d6plinks/CBRR-6YWBNV where you will see a possible solution. If it works, you can mark the entry "solved". Good luck.
T520 4239-CTO
T61/p 6459-CTO (Gone but not forgotten)
A31/p XP Pro 1 gig memory
A30/p XP Pro 1 gig memory
TP600 Win 2K 288 mb memory
701C Win 98 Don't ask

Power manager doesn't display - so I can't get rid of the power change beep...

Hi everybody,
I just got the X200 laptop, like it very much except for the annoyingly loud beep when the system goes into stand-by. Looking trough this forum I tried many things, like changing the sound settings in regedit to 'no' and disabling the 'beep' plugin in the system settings. No luck so far. An other solution (that sounds useful) is disabling the 'beep on power changes' option in the Power Manager. But...when I open the Power Manager, it displays the welcome/info screen and then disappears! How can I get into the Power Manager??
Hope someone can help...
Cheers,
Hanneke

That's a strange one. Run Thinkvantage System Update, or just download and install most recent PM driver and software. Maybe refreshing these will give you PM back. Otherwise, I believe you may also have a setting in the BIOS for the beep. Not in front of my X100 now, but I know I have this setting on my X60s.

How Can I get v1.52 of "ThinkPad Power Management driver for Windows"?

The subject says it all: How can I get v1.52 of the "ThinkPad Power Management driver for Windows Vista, XP, 2000, Me, 98 SE - ThinkPad" driver? Since installing v1.53 I've been experiencing screen issues (screen goes dark, and it's very hard to get the screen brightness back to normal) that seem to be tied to my T40p entering sleep mode / turning off the screen.
I want to see if reverting back to v1.52 fixes these problems.
Thanks,
RocketDude
RocketDude
T400s 2801-CTO

Nilst,
Issue has been escalated however currently pending the team to fix it. Will update once I have news from them.
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

Power Manager 3.05 - Can't Install on Windows 7

Anyone have a suggestion on how to install Power Manager 3.05 on Win 7. I've tried several times to manually install from download and from System Update (4.x) to no avail. System update says I have no previous version installed... although I have a battery gauage on my taskbar.. just that none of the menu items work. System Update log claims to have a successful install and asks to reboot, but I get the same result.
The manual install from download says: "Warning. Cannot run on this system." This is true with both 3.05 and 3.01a.
When I bring up the Control Panel, I get an error "Power Manager. An error occurred while loading resource DLL."
There is no Power Manager software listed in the "Uninstall Programs" listing - so I can't find a way to uninstall the previous version (whatever version it is, I don't know.)
I have a t400 & W7 32bit
I currently have Hotkey installed (On Screen Display 5.32.00; Thinkpad Full Screen Magnifier 2.10)
I have PM Driver 1.55 installed - downloaded from lenovo.com.
This seems to be the last remaining issue since my upgrade to W7. Any suggestions greatly appreciated!
Solved!
Go to Solution.

Problem solved! Turns out the version I had installed was 1.6. I used regedit to remove all references to PWRMGR and disabled the service startup. Rebooted and ran the setup for 3.05 and it installed successfully.

Can't turn off WiFi Power Management with iwconfig

I had an issue with my WiFi connection dropping occasionally, and I found that my situation was the same as described in this part of the Wicd wiki article: <https://wiki.archlinux.org/index.php/Wi … connecting>, so I used iwconfig to turn power management off, like it said. But, the disconnecting issue is still there. I think power management is still on, because of this:
[<...>]$ cat "/sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/wlan0/power/control"
auto
[<...>]$ cat "/sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/wlan0/device/power/control"
on
Yet, iwconfig still shows that power management is off:
[<...>]$ iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"<...>"
Mode:Managed Frequency:2.437 GHz Access Point: 00:21:A0:F9:FD:C3
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=48/70 Signal level=-62 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:2 Invalid misc:239 Missed beacon:0
Info
Using Wicd for network management
Wireless card: Atheros Communications Inc. AR9485 Wireless Network Adapter (rev 01)
Using systemd
[<...>]$ systemctl | grep net
sys-devices-pci0000:00-0000:00:1c.1-0000:02:00.0-net-wlan0.device loaded active plugged AR9485 Wireless Network Adapter
sys-subsystem-net-devices-wlan0.device loaded active plugged AR9485 Wireless Network Adapter
wicd.service loaded active running Wicd a wireless and wired network manager for Linux
network.target loaded active active Network
Last edited by thorion (2012-11-02 19:42:57)

Haven't had this problem since I switched to NetworkManager, even with power management on...

Can't uninstall Lenovo Power Manager in Windows 8 - upgraded from Windows 7

Hi all, I recently purchased a Lenovo X230. It was preloaded with Windows 7 Home Premium. I upgraded this system to Windows 8 Pro without any problems.
I noticed that Windows 8 Pro has some issues with the Lenovo Power Manager, which after perusing this forum seems to be pretty incompatible with Windows 8. I am trying to uninstall the Power Manager in the Control Panel, but I can't find the application to install. I only see an option to uninstall the Lenovo Power Management Driver. Does anyone know how I can uninstall the entire Lenovo Power Manager from my system?

Backstory: I installed the Power Manager on a clean installation of Windows 8 by setting it to Windows 7 Compatibility Mode. It seemed to be working swimmingly, until the next day when I tried to use it and discovered that it would always crash on start-up. Unfortunate. I naively attempted to correct this problem by uninstalling and reinstalling the application. Strangely, I was able to successfully uninstall the program using the Add/Remove Programs Control Panel and then reinstall the program. But, despite the reinstallation the problem persisted and I tried to uninstall the program again. It would not uninstall, claiming the installer wasn't compatible with my system.
Fix: Run "C:\Program Files (x86)\InstallShield Installation Information\{DAC01CEE-5BAE-42D5-81FC-B687E84E8405}\Setup.exe" -l0x9 -AddRemove from an administrative command prompt. This should completely remove Power Manager and it's entry in the Add/Remove Programs console. The GUID may be different if you were not using the most recent version of Power Manager, I installed 6.36. The additional power plans that it originally installed are still in the Windows Power control panel.
I am still wrestling with the Power Manager to get it working somewhat reliably on Windows 8. I am very disappointed that this level of effort is required on a new system that is Windows 8 compliant.

Radeon power management: can't write to /sys/class/drm/card0/device/

Similar Messages

Maybe you are looking for