Public bug reported: The system is an Asus UL20FT-A1 laptop. Kernel 3.0.0-12-generic has no display issues, but 3.0.0-15-generic and 3.0.0-17-generic will not output to the laptop's built-in display. All of the above kernels work with HDMI and VGA outputs.
ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-15-generic 3.0.0-15.26 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: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: user 3479 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf4000000 irq 43' Mixer name : 'Intel IbexPeak HDMI' Components : 'HDA:10ec0269,10431133,00100100 HDA:80862804,80860101,00100000' Controls : 15 Simple ctrls : 8 Date: Mon Apr 2 22:58:18 2012 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=7e7a99d3-65d2-4c53-b7b3-9b908746d16e InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 003: ID 064e:a136 Suyin Corp. Asus Integrated Webcam [CN031B] MachineType: ASUSTeK Computer Inc. UL20FT ProcEnviron: PATH=(custom, no User Name) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=2366925b-f3a9-4b4d-9a4d-156e77c356cb 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 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/18/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 223 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UL20FT dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: 0x00000000 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr223:bd02/18/2011:svnASUSTeKComputerInc.:pnUL20FT:pvr1.0:rvnASUSTeKComputerInc.:rnUL20FT:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: UL20FT dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug oneiric staging -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/972127 Title: laptop screen shows no output with Linux 3.0.0-15-generic or 3.0.0-17-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/972127/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs