** Description changed: I first encountered this bug in Natty Narwhal. However my inexperience with working with Ubuntu prevented me from filing a proper bug report. Basically, what's happening is, the system starts to boot up, then the screen goes black. The computer is still running and booting normally, however, the back light for the display does not come on. This was confirmed by shining a light into the screen and seeing the Ubuntu desktop. I performed a fresh installation of Maverick Meerkat and then did an upgrade to Natty Narwhal. The same problem. However, when booted with a previous Linux kernel version, there is no problem. This leads me to believe the problem is with the kernel, and not Xorg as the back light fails to power on at kernel boot. + This bug is also effecting the current Oneiric Ocelot build which is + Alpha 3. This bug report pertains to Oneiric Ocelot. + ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-8-generic 3.0.0-8.10 ProcVersionSignature: Ubuntu 3.0.0-8.10-generic 3.0.1 Uname: Linux 3.0.0-8-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: - **** List of PLAYBACK Hardware Devices **** - card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: ubuntu 4151 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: ubuntu 4151 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 46' - Mixer name : 'Realtek ALC272X' - Components : 'HDA:10ec0272,10250459,00100001' - Controls : 20 - Simple ctrls : 12 + Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 46' + Mixer name : 'Realtek ALC272X' + Components : 'HDA:10ec0272,10250459,00100001' + Controls : 20 + Simple ctrls : 12 CasperVersion: 1.278 Date: Sun Aug 14 16:47:43 2011 LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110812) MachineType: Acer Aspire 5734Z ProcEnviron: - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- nomodeset BOOT_IMAGE=/casper/vmlinuz RelatedPackageVersions: - linux-restricted-modules-3.0.0-8-generic N/A - linux-backports-modules-3.0.0-8-generic N/A - linux-firmware 1.59 + linux-restricted-modules-3.0.0-8-generic N/A + linux-backports-modules-3.0.0-8-generic N/A + linux-firmware 1.59 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/20/2010 dmi.bios.vendor: Acer dmi.bios.version: V1.02 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Aspire 5734Z dmi.board.vendor: Acer dmi.board.version: V1.02 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.02 dmi.modalias: dmi:bvnAcer:bvrV1.02:bd05/20/2010:svnAcer:pnAspire5734Z:pvrV1.02:rvnAcer:rnAspire5734Z:rvrV1.02:cvnAcer:ct10:cvrV1.02: dmi.product.name: Aspire 5734Z dmi.product.version: V1.02 dmi.sys.vendor: Acer
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/826386 Title: No backlight display Acer Aspire 5734Z To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/826386/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
