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[Launchpad Bug Tracker <1164557@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1164557

Title:
  1002:7145 [Lenovo ThinkPad R60] Laptop too hot with radeon drivers

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  My laptop goes to very high temperature. First I think it was a fan
  problem. I adjusted thinkfan to use the disengaged option. Now my fan
  is at maximum speed if the temperature goes over 67°C. But still it is
  not possible to run the laptop for a longer time an 100% CPU. It then
  overheats and stops working. For example just after clamscan starts
  working the fan is at maximum speed (5600 revolutions) and the
  temperature goes up over 85°C, the CPU usage is the about 70%.

  My standard governer is "ondemand". By using "powersave" the
  temperature will be about 5-10°C decrease.

  My investigation show me that in my opinion the VID is to high. To verify this I do the following:
  -  rdmsr -p0 [1] 0x0199 for every speed steps
  -  the governer "ondemand" switches the MSR 0x199 between
     - 0x0613, which means 1GHz and 1.275V?
     - 0x081c, which means 1,33GHz and 1.3875V?
     - 0x0b28, which means 1,83GHz and 1.5375V?
  > by 100% CPU the laptop overheats and stops

  - set the governer to userspace 1.833GHz
  - reduce the VID using: wrmsr -p0 [1] 0x0199 0x0b20
  > the temperature goes not over 65°C by starting load that goes to 100% CPU!.

  I see that the VID is always set to 0x0b28 when the governor change
  the speed to the highest speed. I don't know if the governor or an
  other kernel module set the VID The Sped (FID) is selected by the
  governor.

  WORKAROUND: Use the powersave CPU governor.

  ---
  ApportVersion: 2.12.6-0ubuntu1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     3165 F.... pulseaudio
  CasperVersion: 1.336ubuntu1
  CurrentDmesg:
   [   71.182993] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
   [   71.185122] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
   [   71.982542] iwl3945 0000:03:00.0: loaded firmware version 15.32.2.9
   [   72.055058] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
   [   72.055518] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
  DistroRelease: Ubuntu 14.04
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20131108)
  MachineType: LENOVO 9461DXG
  MarkForUpload: True
  Package: linux (not installed)
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.12.0-2.5-generic 3.12.0
  RelatedPackageVersions:
   linux-restricted-modules-3.12.0-2-generic N/A
   linux-backports-modules-3.12.0-2-generic  N/A
   linux-firmware                            1.117
  Tags:  trusty
  Uname: Linux 3.12.0-2-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 08/28/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7CETD3WW (2.23 )
  dmi.board.name: 9461DXG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7CETD3WW(2.23):bd08/28/2009:svnLENOVO:pn9461DXG:pvrThinkPadR60:rvnLENOVO:rn9461DXG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 9461DXG
  dmi.product.version: ThinkPad R60
  dmi.sys.vendor: LENOVO

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