Hi Chris (penalvch) Kernel 4.12rc1 and rc4 are both fine in terms of the bug and seem to run very smoothly, but the 4.11rc1, 4.11.1, 4.11.3 all show the bug (and I have seen them crash HARD, not just screen glitches).
I havent yet gone back through 4.10 yet to find the first 'bad' kernel. Can you confirm that the following Ubuntu kernels correlate to the upstream as follows? 4.10.0-22.24 is equivalent to 4.10.15 mainline 4.10.0-21.23 is equivalent to 4.10.11 mainline 4.10.0-19.21 is equivalent to 4.10.8 mainline Ubuntu -19 kernel is the first one i saw on my 17.04 install, which did show the bug. Where would you suggest going back to? I dont have any experience with git so am not sure I can dig deeper to find the bad commit, I'm afraid. -- 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/1695989 Title: i915 *ERROR* CPU pipe A FIFO underrun - graphic glitches Status in linux package in Ubuntu: Incomplete Bug description: 17.04 Ubuntu Gnome with default kernel. Seeing black bars flash on screen, sometimes whole screen goes black. Easily reproduced by having the Gnome Terminal app on the lower part of the screen. Often so bad that the laptop locks up (screen goes black and shuts off without warning after a few seconds). dmesg is full of the "CPU pipe A FIFO underrun" errors. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-21-generic 4.10.0-21.23 ProcVersionSignature: Ubuntu 4.10.0-21.23-generic 4.10.11 Uname: Linux 4.10.0-21-generic x86_64 ApportVersion: 2.20.4-0ubuntu4.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1632 F.... pulseaudio CurrentDesktop: GNOME Date: Mon Jun 5 21:16:06 2017 InstallationDate: Installed on 2017-05-03 (33 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: Dell Inc. Latitude E4310 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-21-generic.efi.signed root=UUID=fad75c7e-4ba7-49fd-95c6-dc5d2446b31b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-21-generic N/A linux-backports-modules-4.10.0-21-generic N/A linux-firmware 1.164.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/26/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 0T6M8G dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd05/26/2011:svnDellInc.:pnLatitudeE4310:pvr0001:rvnDellInc.:rn0T6M8G:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E4310 dmi.product.version: 0001 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1695989/+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