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[Bug 1357821] Re: can't use system with kernels newer than 1.13.x due to monitor resolution misfunction

 

** Attachment added: "this dmesg log has been taken remotely from another computer qhile running desktop PC with the 3.16 kernel (it fails so i cant take the log locally)"
   https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1357821/+attachment/4180035/+files/dmesg-linux-3.16.x.txt

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https://bugs.launchpad.net/bugs/1357821

Title:
  can't use system with kernels newer than 1.13.x due to monitor
  resolution misfunction

Status in The Linux Lowlatency Kernel:
  Unknown
Status in “linux-lowlatency” package in Ubuntu:
  New

Bug description:
  i can use Linux 3.13.x kernel (im currently running 1.3.0-32 from
  Trusty while writing this). Once i upgraded to 1.14.x, and i couldnt
  use my PC. same symphtoms.

  it seems that kernel does not get monitor resolution properly, but im
  not good at coding, so i cant say what the reason is...

  Now, i have recently upgraded to Utopic, and i cant use 1.16.x kernels
  too.

  I have 2 laptops, and this desktop PC

  My laptops have an AMD Radeon HD 5143 and an AMD Radeon HD 8400
  (integrated into an AMD A6-5200 CPU). Both are working correctly.

  My desktop PC (the one that fails) uses an AMD Radeon HD6570 PCI-
  express, with an Intel Core i3-530

  Each computer uses the new 7.4.0 ati driver, so open source driver is not the problem.
  --- 
  ApportVersion: 2.14.5-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  elhoir     5091 F.... pulseaudio
   /dev/snd/controlC0:  elhoir     5091 F.... pulseaudio
   /dev/snd/pcmC0D0c:   elhoir     5091 F...m pulseaudio
   /dev/snd/pcmC0D0p:   elhoir     5091 F...m pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=85301c2e-f08c-4e16-9966-a6236b50f45b
  InstallationDate: Installed on 2012-02-27 (901 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: MEDIONPC MS-7616
  Package: linux-lowlatency 3.16.0.8.9
  PackageArchitecture: amd64
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-lowlatency root=UUID=cded073e-f845-4947-970b-f8a4290c4c2b ro quiet splash acpi_osi=Linux crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-32.57-lowlatency 3.13.11.4
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-lowlatency N/A
   linux-backports-modules-3.13.0-32-lowlatency  N/A
   linux-firmware                                1.132
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  utopic
  Uname: Linux 3.13.0-32-lowlatency x86_64
  UpgradeStatus: Upgraded to utopic on 2014-08-15 (1 days ago)
  UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare vboxusers video wireshark
  WifiSyslog: Aug 17 01:18:37 elhoir-desktop kernel: [  630.614822] perf samples too long (2506 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
  _MarkForUpload: True
  dmi.bios.date: 01/13/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: A7616MLN.20F
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: MS-7616
  dmi.board.vendor: MEDIONPC
  dmi.board.version: 1.0
  dmi.chassis.type: 3
  dmi.chassis.vendor: MEDIONPC
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA7616MLN.20F:bd01/13/2010:svnMEDIONPC:pnMS-7616:pvr1.0:rvnMEDIONPC:rnMS-7616:rvr1.0:cvnMEDIONPC:ct3:cvr:
  dmi.product.name: MS-7616
  dmi.product.version: 1.0
  dmi.sys.vendor: MEDIONPC

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