The following appeared in dmesg after I got that last dmesg.txt:
[ 831.299129] Raw EDID: [ 831.299132] 02 03 1d f1 50 90 05 04 03 02 07 16 01 06 11 12 [ 831.299133] 15 13 14 1f 20 23 09 1f 07 83 01 00 00 02 3a 80 [ 831.299134] 18 71 38 2d 40 58 2c 45 00 81 91 21 00 00 1e 01 [ 831.299135] 1d 80 18 71 1c 16 20 58 2c 25 00 81 91 21 00 00 [ 831.299137] 9e 01 1d 00 72 51 d0 1e 20 6e 28 55 00 81 91 21 [ 831.299138] 00 00 1e 8f 0a d0 8a 20 e0 2d 10 10 3e 96 00 81 [ 831.299139] 91 21 00 00 18 00 00 00 00 00 00 00 00 00 00 00 [ 831.299140] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e6 [ 831.629384] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 833.074178] usb 2-2.3.3: USB disconnect, device number 7 Seems like it'd be useful. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1475729 Title: Lots of EDID related back traces. Status in linux package in Ubuntu: Incomplete Bug description: I am using the Dell XPS 13 9343. When I plug into a Dell U3014 monitor, there is a lot of funky behavior. In dmesg I see a ton of backtraces. I've attached a dmesg output with the traces. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-22-generic 3.19.0-22.22 ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1 Uname: Linux 3.19.0-22-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: wt 1966 F.... pulseaudio /dev/snd/controlC0: wt 1966 F.... pulseaudio CurrentDesktop: Unity Date: Fri Jul 17 10:03:59 2015 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-trusty-amd64-20140620-0 HibernationDevice: RESUME=UUID=25d5c49f-dec3-4600-906b-5942cd316c4e InstallationDate: Installed on 2015-04-29 (78 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25 MachineType: Dell Inc. XPS 13 9343 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-22-generic root=UUID=33afd237-d4ef-43f9-a375-d5693be6aaff ro quiet splash pcie_aspm=force radeon.modeset=0 nouveau.modeset=0 video.use_native_backlight=1 pcie_aspm=force radeon.modeset=0 nouveau.modeset=0 video.use_native_backlight=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-22-generic N/A linux-backports-modules-3.19.0-22-generic N/A linux-firmware 1.143.1 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-04-30 (78 days ago) dmi.bios.date: 05/15/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A04 dmi.board.name: 0310JH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA04:bd05/15/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9343 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1475729/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
