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[Jaak Simm <jaak.simm@xxxxxxxxx>]

Little-bit more details. The keys work, GUI changes and the value in
/sys/class/backlight/toshiba/brightness changes from 0 to 7 when
changing brightness, however there is no real effect on screen
brightness. There is also
/sys/class/backlight/intel_backlight/brightness file, which is not
affected when changing backlight.

Data about my laptop:

sudo s2ram -n
Machine unknown
This machine can be identified by:
    sys_vendor   = "TOSHIBA"
    sys_product  = "Satellite R630"
    sys_version  = "PT31LE-01600LG3"
    bios_version = "Version 1.50  "

There seems to be a similar bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/935778

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https://bugs.launchpad.net/bugs/1159771

Title:
  Toshiba Portege R830-13C no backlight after resume from suspend

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Toshiba Portege R830-13C: laptop comes back from suspend, but with no
  backlight.

  I can slightly work around it with the script at
  http://www.refreshit.info/2013/03/solved-backlight-problem-after-
  suspend.html , but this is less than ideal (and I can't adjust the
  backlight after this).

  uname -a output:
  Linux lt14000 3.8.0-14-generic #24-Ubuntu SMP Fri Mar 22 19:45:03 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

  This is a regression from Quantal on the same laptop, where the
  backlight came back after suspend - stuck at full brightness, not
  adjustable (so still not 100% functional).

  [Extra information for backlight bugs will be added next.]

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-14-generic 3.8.0-14.24
  ProcVersionSignature: Ubuntu 3.8.0-14.24-generic 3.8.4
  Uname: Linux 3.8.0-14-generic x86_64
  ApportVersion: 2.9.2-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  fun        1687 F.... pulseaudio
  Date: Mon Mar 25 12:44:31 2013
  HibernationDevice: RESUME=UUID=a2e3beff-e8bf-4e96-8086-972314e2589e
  InstallationDate: Installed on 2012-09-21 (184 days ago)
  InstallationMedia: Xubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
  MachineType: TOSHIBA PORTEGE R830
  MarkForUpload: True
  ProcFB:
   0 inteldrmfb
   1 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-14-generic root=UUID=6331e1ea-703a-491e-8543-734c79f49ca3 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-14-generic N/A
   linux-backports-modules-3.8.0-14-generic  N/A
   linux-firmware                            1.104
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2012-09-23 (183 days ago)
  dmi.bios.date: 01/24/2012
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: Version 3.60
  dmi.board.asset.tag: 0000000000
  dmi.board.name: Portable PC
  dmi.board.vendor: TOSHIBA
  dmi.board.version: Version A0
  dmi.chassis.asset.tag: 0000000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: Version 1.0
  dmi.modalias: dmi:bvnTOSHIBA:bvrVersion3.60:bd01/24/2012:svnTOSHIBA:pnPORTEGER830:pvrPT321E-01E00YEN:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
  dmi.product.name: PORTEGE R830
  dmi.product.version: PT321E-01E00YEN
  dmi.sys.vendor: TOSHIBA

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