apport information ** Attachment added: "UdevDb.txt" https://bugs.launchpad.net/bugs/1514315/+attachment/4515391/+files/UdevDb.txt
-- 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/1514315 Title: [i915_bpo] [SKL-U] System hangs when switching video out to the next mode with kernel updated to 3.19.0-32.37+bpo1 Status in linux package in Ubuntu: New Bug description: After update to test kernel 3.19.0-32.37+bpo1, system will hang with blackscreen while switching to the next mode with HDMI video out. * The function works fine with -28 kernel. * SKL-H doesn't find this issue Test configs: Intel SKL-U graphics: Dell Inspiron 13-7359 Kernel version: 3.19.0-32.37+bpo1 --- ApportVersion: 2.14.1-0ubuntu3.12 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: u 2108 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) CurrentDesktop: Unity DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-kittyhawk2-trusty-amd64-20150907-1 DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=61acef2b-8b38-40a2-a2a1-1f8346dbfa80 InstallationDate: Installed on 2015-11-06 (2 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Failed to find casper uuid.conf in 'binary/casper/initrd.img-3.19.0-28-generic.old-dkms' LIVE Binary 20150907-22:18 MachineType: Dell Inc. Inspiron 13-7359 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-32-generic root=UUID=fc10fc31-8426-4eb5-8157-35d5d5c70335 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-32.37+bpo1-generic 3.19.8-ckt7 RelatedPackageVersions: linux-restricted-modules-3.19.0-32-generic N/A linux-backports-modules-3.19.0-32-generic N/A linux-firmware 1.127.15 Tags: trusty Uname: Linux 3.19.0-32-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/08/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.02.00 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd09/08/2015:svnDellInc.:pnInspiron13-7359:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Inspiron 13-7359 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1514315/+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