[Bug 627148] [NEW] fan runs constantly and computer runs hot using radeon driver

[Jonathan Bober]

Public bug reported:

This is likely related (or identical) to the bug described at 563156,
but I'm filing a new report as requested at

https://wiki.ubuntu.com/Kernel/Debugging/HighTemperatures

A brief description is: My laptop runs its fan constantly and runs at a
somewhat higher temperature when I am using the open source drivers for
my video card (at ATI mobility radeon 5430). When I use the restricted
driver, the fan runs less often and the system runs cooler. (I won't
complain about the other problems with the restricted driver here.)

Attached to this bug is a tar file which contains some log files with
temperature logs in various configurations, and descriptions of those
configurations.

A random thought: I didn't see this mentioned in the other bug ticket
anywhere, so I'll mention my uninformed thought about this bug here. I
think that this GPU has some dynamic power management (ATI PowerPlay),
which sounds to me like something similar to CPU throttling. Perhaps the
restricted driver enables it and the open source driver does not. This
seems to me like something that could account for the difference.

I assume that this automated bug-reporting-thingy (which I've never used
before) is automatically including information about my system, so I
won't repeat all that here.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic 2.6.32-24.41
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-24.41-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  bober      1634 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf1000000 irq 22'
   Mixer name	: 'IDT 92HD73C1X5'
   Components	: 'HDA:111d7675,102802bd,00100103'
   Controls      : 16
   Simple ctrls  : 10
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xcfeec000 irq 17'
   Mixer name	: 'ATI R6xx HDMI'
   Components	: 'HDA:1002aa01,00aa0100,00100100'
   Controls      : 4
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [off]
Date: Mon Aug 30 19:34:23 2010
HibernationDevice: RESUME=UUID=466c77f5-ea01-45bf-bb53-53912f04c150
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Dell Inc. Studio 1557
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=2f5a3544-57be-41b8-9ac3-ff3c9afacc46 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
dmi.bios.date: 05/27/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.vendor: Dell Inc.
dmi.board.version: A06
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A06
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd05/27/2010:svnDellInc.:pnStudio1557:pvrA06:rvnDellInc.:rn:rvrA06:cvnDellInc.:ct8:cvrA06:
dmi.product.name: Studio 1557
dmi.product.version: A06
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug kernel-therm lucid needs-upstream-testing

-- 
fan runs constantly and computer runs hot using radeon driver
https://bugs.launchpad.net/bugs/627148
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.