John D Marsden, did this problem not occur in a release prior to Trusty?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1338063
Title:
[Toshiba Portege Z835-ST6N03] Brightness control lost after suspend
screen dimmed
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Using Ubuntu 14.04. Recently updated to kernel version Ubuntu
3.13.0-30.54-generic 3.13.11.2
I expect brightness of my LCD screen to remain the same and be
controllable after waking from suspend. It doesn't and isn't.
What happens:
Brightness controls fully working after initial boot, both through
function keys and system settings.
After putting computer into suspend and then re-awakening the LCD
screen comes up with lowest brightness in actual appearance but
settings still show the brightness as set at suspend time. Controls
for brightness have become ineffective - they slide the brightness bar
along but make no difference to the actual brightness of the screen.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.54
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: john 2060 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Jul 5 18:55:05 2014
InstallationDate: Installed on 2012-06-04 (760 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MachineType: TOSHIBA PORTEGE Z835
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic
root=UUID=865f4d37-5ceb-4e4a-b59b-032fa8a2c80b ro quiet splash elevator=noop
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-30-generic N/A
linux-backports-modules-3.13.0-30-generic N/A
linux-firmware 1.127.4
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-04-27 (68 days ago)
dmi.bios.date: 02/08/2012
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 1.60
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:bvrVersion1.60:bd02/08/2012:svnTOSHIBA:pnPORTEGEZ835:pvrPT224U-01W00C:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.name: PORTEGE Z835
dmi.product.version: PT224U-01W00C
dmi.sys.vendor: TOSHIBA
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