kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

hyper_ch, thank you for reporting this and helping make Ubuntu better. As per your https://launchpadlibrarian.net/161032660/BootDmesg.txt :
[    1.770772] [drm] Wrong MCH_SSKPD value: 0x16040307
[    1.770774] [drm] This can cause pipe underruns and display issues.
[    1.770775] [drm] Please upgrade your BIOS to fix this.

Hence, as per http://support.asus.com/download.aspx?SLanguage=en&m=U36SD&os=30 an update is available for your BIOS (206). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette
.

Thank you for your understanding.

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

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

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https://bugs.launchpad.net/bugs/1264807

Title:
  Kubuntu 14.04 freezes after LightDM login

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I have re-setup my notebook with Kubuntu 14.04. I have an nVidia
  Optimus platform and hence wanting to try out kerne 3.12 with native
  switching support. Also the whole system is encrypted with LUKS/dm-
  crypt.

  At bootup I get nicely prompted for the LUKS key, I enter it and
  afterwords I end up at LightDM. I provide the password there and then
  the KDE screen appears on which different icons would appear within
  seconds. However the computer freezes at that point - or rather the
  display freezes.

  I tried to ctrl-alt-f2 but that didn't open a terminal.

  Upon suggestion, I then tried to ssh into the computer. That worked
  fine.

  So it seems there are graphic problems or something. In order to use
  that installation I currently use the Saucy kernel.

  While SSHing I made a backup of the whole /var/log folder. I don't
  know which of them are relevenat but I can provide them when asked.

  According the lshw I have:

  product:	GF119M [GeForce GT 520M]
  vendor:	NVIDIA Corporation

  and

  product:	2nd Generation Core Processor Family Integrated Graphics Controller
  vendor:	Intel Corporation
  --- 
  ApportVersion: 2.12.7-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hyper      2607 F.... pulseaudio
   /dev/snd/controlC1:  hyper      2607 F.... pulseaudio
   /dev/snd/pcmC1D0p:   hyper      2607 F...m pulseaudio
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  MachineType: ASUSTeK Computer Inc. U36SD
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=8f533cbf-2fab-4d0c-b9df-ab113f79f022 ro splash quiet pcie_aspm=force vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.117
  Tags:  trusty
  Uname: Linux 3.11.0-15-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 07/12/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: U36SD.205
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: U36SD
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrU36SD.205:bd07/12/2011:svnASUSTeKComputerInc.:pnU36SD:pvr1.0:rvnASUSTeKComputerInc.:rnU36SD:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: U36SD
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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