** Description changed: + After the screensaver fades the screen to black and turns off the + backlight, tapping a keyboard key does NOT turn the backlight back on + again. The backlight is "stuck off" making the system appear to be + hung. + + This a regression in Ubuntu 11.10. + + ----- (original problem description) ----- + + [The original problem description is below, however it has been + determined that the problem occurs with the the stock 11.10 release + kernel and does not actually relate to acpi_backlight=vendor.] + I have been using Kamal Mostafa's kernels for my Dell Studio 15 for a few releases. Now, in oneiric, the brightness can not be changed unless I add acpi_backlight=vendor to the kernel command line. The brightness adjustment works fine when I make this change. However, when I add this command line option, it introduces another issue where when the display goes to sleep, it does not resume. Somtimes I get the screen back by switching to a console tty and then back to the X tty. But, the only reliable way I can get a screen to come back on is to close the laptop lid (so the system suspends) and then open it. The display will turn on for resume. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-12-generic 3.0.0-12.20 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu3 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: jrubin 3145 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: jrubin 3145 F.... pulseaudio Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 45' - Mixer name : 'Intel IbexPeak HDMI' - Components : 'HDA:111d7675,10280413,00100103 HDA:80862804,80860101,00100000' - Controls : 20 - Simple ctrls : 11 + Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 45' + Mixer name : 'Intel IbexPeak HDMI' + Components : 'HDA:111d7675,10280413,00100103 HDA:80862804,80860101,00100000' + Controls : 20 + Simple ctrls : 11 Date: Tue Oct 11 22:09:44 2011 HibernationDevice: RESUME=UUID=ffe5b171-a88d-44b8-9f4e-bca222ce60bd InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1) MachineType: Dell Inc. Studio 1558 ProcEnviron: - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.0.0-12-generic N/A - linux-backports-modules-3.0.0-12-generic N/A - linux-firmware 1.60 + linux-restricted-modules-3.0.0-12-generic N/A + linux-backports-modules-3.0.0-12-generic N/A + linux-firmware 1.60 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to oneiric on 2011-10-03 (8 days ago) dmi.bios.date: 03/30/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 0G939P dmi.board.vendor: Dell Inc. dmi.board.version: A12 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd03/30/2011:svnDellInc.:pnStudio1558:pvrA12:rvnDellInc.:rn0G939P:rvrA12:cvnDellInc.:ct8:cvrA12: dmi.product.name: Studio 1558 dmi.product.version: A12 dmi.sys.vendor: Dell Inc.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/872652 Title: screensaver backlight stuck off, system looks hung To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/872652/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs