Public bug reported: I have a Sony Vaio SA with Intel Core i7 and radeon hybrid graphics card
When booting my system I automatically run a script to turn off the Radeon (which should save me some battery, and reduces heat) with: sudo echo OFF > /sys/kernel/debug/vgaswitcheroo/switch this works out perfectly OK. However, when I resume from standby, echo /sys/kernel/debug/vgaswitcheroo/switch tells me the radeon is still turned of, but I can see (due to heat & powerconsumption that it actually is back on again, see also: http://www.33dots.com/index.php/linux/hybrid-graphics-in-sony-vaio-and-fedora.html ) So the trick is/should be to explicitly turn it ON and than back OFF again, by calling sudo echo ON > /sys/kernel/debug/vgaswitcheroo/switch sudo echo OFF > /sys/kernel/debug/vgaswitcheroo/switch and this is what resulted in this error report. (On Ubuntu 10.04 with 3.0.5 kernel this resulted in a frozen (although pretty hot) laptop) ProblemType: KernelOops DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-7-generic 3.0.0-7.9 ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0 Uname: Linux 3.0.0-7-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. Annotation: Your system might become unstable now and might need to be restarted. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC275 Analog [ALC275 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: leon 1727 F.... pulseaudio CRDA: Error: [Errno 2] Bestand of map bestaat niet Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc9400000 irq 50' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0275,104d5000,00100005 HDA:80862805,104d5000,00100000' Controls : 21 Simple ctrls : 10 Date: Sun Jul 31 14:13:58 2011 Failure: oops HibernationDevice: RESUME=UUID=33f88dd7-b72c-4b74-a812-05930d439a3c InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: Sony Corporation VPCSA2C5E ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-7-generic root=UUID=0ea4793a-498f-47c0-92a6-30f2ee7a5086 ro quiet splash vt.handoff=7 RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-1ubuntu13 SourcePackage: linux StagingDrivers: rts_pstor mei Title: BUG: unable to handle kernel paging request at ffffc90423100ffc UpgradeStatus: Upgraded to oneiric on 2011-07-31 (0 days ago) dmi.bios.date: 04/25/2011 dmi.bios.vendor: INSYDE dmi.bios.version: R1031H4 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnINSYDE:bvrR1031H4:bd04/25/2011:svnSonyCorporation:pnVPCSA2C5E:pvrC609BGJN:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: VPCSA2C5E dmi.product.version: C609BGJN dmi.sys.vendor: Sony Corporation ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-kerneloops kernel-driver-radeon kernel-oops 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/818841 Title: BUG: unable to handle kernel paging request at ffffc90423100ffc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/818841/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
