Public bug reported: Graphics card is using Intel driver and is reported by Intel driver as Intel Arrandale. Second monitor is Dell U2410 (successfully detected by xorg and noted in /var/log/Xorg.0.log). Machine is a Fujitsu T580 laptop. When second monitor is attached, laptop screen goes blank and Dell monitor flickers with various patterns (or sometimes stays blank). Problem is 100% repeatable. There is no crash, and I can ctrl-alt-F1 to make text mode successfully appear on the laptop screen. Disconnecting external monitor, ctrl-alt-F1 and then ctrl-alt-F7 (or F8, depending) successfully restores X on my laptop screen every time.
Problem does NOT occur if I boot with the kernel from package linux- image-2.6.35-22-generic. Problem DOES occur if I boot with the kernel from package linux-image-2.6.38-5-generic. Problem DOES occur if I boot with the "mainline" kernel from linux-image-2.6.38-999-generic_2.6.38-999.201102260905_amd64.deb (found at http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/linux-image-2.6.38-999-generic_2.6.38-999.201102260905_amd64.deb ). Problem occurs whether or not I am running a window manager. Problem occurs with both the xorg package versions from maverick and from natty. Thanks for your help. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-5-generic 2.6.38-5.32 Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6 Uname: Linux 2.6.38-5-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: bshanks 1067 F.... pulseaudio /dev/snd/controlC1: bshanks 1067 F.... pulseaudio /dev/snd/controlC0: bshanks 1067 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf4700000 irq 44' Mixer name : 'Intel IbexPeak HDMI' Components : 'HDA:10ec0269,10cf0000,00100004 HDA:80862804,80860101,00100000' Controls : 19 Simple ctrls : 10 Card1.Amixer.info: Card hw:1 'Device'/'C-Media Electronics Inc. USB Multimedia Audio Device at usb-0000:00:1a.0-1.1.1.' Mixer name : 'USB Mixer' Components : 'USB0d8c:0105' Controls : 13 Simple ctrls : 6 Card2.Amixer.info: Card hw:2 'default'/'AKM AK5370 at usb-0000:00:1a.0-1.1.3.6, full speed' Mixer name : 'USB Mixer' Components : 'USB0556:0001' Controls : 3 Simple ctrls : 2 Date: Sun Feb 27 20:05:03 2011 HibernationDevice: RESUME=UUID=1d9bd6be-28ee-4102-ae4a-f8d52e0ae421 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MachineType: FUJITSU T580 ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=C SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic root=UUID=db746971-cee9-4a74-90db-0c9cb14920ea ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-5-generic N/A linux-backports-modules-2.6.38-5-generic N/A linux-firmware 1.47 SourcePackage: linux dmi.bios.date: 12/24/2010 dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd. dmi.bios.version: Version 1.04 dmi.board.name: FJNB21E dmi.board.vendor: FUJITSU dmi.chassis.type: 10 dmi.chassis.vendor: AI40110911BA1023 dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.04:bd12/24/2010:svnFUJITSU:pnT580:pvr:rvnFUJITSU:rnFJNB21E:rvr:cvnAI40110911BA1023:ct10:cvr: dmi.product.name: T580 dmi.sys.vendor: FUJITSU ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kernel-graphics natty needs-upstream-testing regression-release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/726353 Title: second monitor displays random flickering -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
