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[Bug 1318531] Re: [Dell Inspiron 17R 5737] Video looks 1 byte shifted

 

This issue does still affect the latest upstream 3.13 kernel.

It affects:
kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11.6-trusty/

It also affects:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15.7-utopic/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15.10-utopic/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16.1-utopic/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc1-utopic/

It does not affect:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc2-trusty/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15.6-utopic/

I've also tested most versions between v3.15-rc2-trusty and
v3.15.6-utopic, none of which are affected. The regression returned in
v3.15.7-utopic which is affected.

Note: In bug #1300349 I mistakenly wrote that v3.15.6-utopic is
affected, but it is not. Version v3.15.7-utopic is affected.

** Tags added: confirmed kernel-bug-exists-upstream

** Tags removed: confirmed

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

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

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https://bugs.launchpad.net/bugs/1318531

Title:
  [Dell Inspiron 17R 5737] Video looks 1 byte shifted

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” source package in Trusty:
  Confirmed

Bug description:
  The video looks like it's shifted by 1byte or so. Red looks green,
  blue looks violet, green looks dark violet. (almost everything looks
  between green and violet as in the attached snapshot.

  WORKAROUND: Change GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" in /etc/default/grub to:
  GRUB_CMDLINE_LINUX_DEFAULT="nomodeset acpi_backlight=vendor"

  ---
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  kubuntu    4499 F.... pulseaudio
   /dev/snd/controlC0:  kubuntu    4499 F.... pulseaudio
  CasperVersion: 1.340
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  LiveMediaBuild: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  MachineType: Dell Inc. Inspiron 5737
  Package: linux (not installed)
  ProcFB:
   0 inteldrmfb
   1 radeondrmfb
  ProcKernelCmdLine: initrd=/casper/initrd.lz file=/cdrom/preseed/username.seed boot=casper maybe-ubiquity  quiet splash -- BOOT_IMAGE=/casper/vmlinuz.efi
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  RfKill:
   1: phy0: Wireless LAN
    Soft blocked: yes
    Hard blocked: yes
  StagingDrivers: rts5139
  Tags:  trusty staging
  Uname: Linux 3.13.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/12/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 045YHR
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A07
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd11/12/2013:svnDellInc.:pnInspiron5737:pvrA07:rvnDellInc.:rn045YHR:rvrA00:cvnDellInc.:ct8:cvrA07:
  dmi.product.name: Inspiron 5737
  dmi.product.version: A07
  dmi.sys.vendor: Dell Inc.

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References