[Bug 914311] Re: vt.handoff 7 breaks psb_gfx driver

[Andy Whitcroft]

Ok.  I have put together a test package to disable vt handoff by default
for the Pulsbough based systems.  If those of you who are affected by
this could reinstate the normal grub configuration and install the
packages at the URL below and see if they correctly disable vt handoff
for you.  Please report any testing here:

    http://people.canonical.com/~apw/lp914311-precise/

Thanks!

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Title:
  vt.handoff 7 breaks psb_gfx driver

Status in The Linux Kernel:
  Invalid
Status in “grub-gfxpayload-lists” package in Ubuntu:
  In Progress
Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  When using a gma500 based netbook with psb_gfx driver (shipped by default with kernel => 3.x)
  if the option "vt.handoff=7" is enabled (by default) the psb_gfx driver cannot initialize itself correctly ending up in a blank screen instead of X.

  I believe the KMS part of psb_gfx is not able to create the
  framebuffer and use it on VT7 with the fbdev xorg driver.

  + tried nightly iso image and already tried mainline kernels.

  WORKAROUND: Removing vt.handoff=7 settings from grub (temporary or by
  editing /etc/grub.d/10_linux) the system load correctly.

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: MID [HDA Intel MID], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: MID [HDA Intel MID], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  luca       1329 F.... pulseaudio
  CRDA: Error: [Errno 2] File o directory non esistente
  Card0.Amixer.info:
   Card hw:0 'MID'/'HDA Intel MID at 0xb0050000 irq 22'
     Mixer name	: 'Realtek ALC272X'
     Components	: 'HDA:10ec0272,10250244,00100001'
     Controls      : 15
     Simple ctrls  : 9
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=b158bd99-9809-40eb-9707-a9f5ab2ec4b7
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  MachineType: Acer AO751h
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-8-generic root=UUID=9cbf9d42-d9e8-417e-9fc3-253fd8622f4c ro acpi_backlight=vendor quiet splash
  ProcVersionSignature: Ubuntu 3.2.0-8.14-generic 3.2.0
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-8-generic N/A
   linux-backports-modules-3.2.0-8-generic  N/A
   linux-firmware                           1.60
  StagingDrivers: psb_gfx
  Tags:  oneiric running-unity staging
  Uname: Linux 3.2.0-8-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 02/26/2010
  dmi.bios.vendor: Acer
  dmi.bios.version: V0.3212
  dmi.board.name: JV11-ML
  dmi.board.vendor: Acer
  dmi.board.version: Not Applicable
  dmi.chassis.type: 1
  dmi.chassis.vendor: Acer
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAcer:bvrV0.3212:bd02/26/2010:svnAcer:pnAO751h:pvrNotApplicable:rvnAcer:rnJV11-ML:rvrNotApplicable:cvnAcer:ct1:cvrN/A:
  dmi.product.name: AO751h
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Acer

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