known issue with modesetting ddx
** Package changed: xserver-xorg-video-intel (Ubuntu) => xorg-server (Ubuntu) ** Bug watch added: freedesktop.org Bugzilla #94126 https://bugs.freedesktop.org/show_bug.cgi?id=94126 ** Also affects: xorg-server via https://bugs.freedesktop.org/show_bug.cgi?id=94126 Importance: Unknown Status: Unknown ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Triaged -- 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/1714749 Title: Screen tearing with when PSR is enabled Status in X.Org X server: Unknown Status in linux package in Ubuntu: Triaged Status in xorg-server package in Ubuntu: New Bug description: I've been experiencing pretty bad screen tearing on 17.10 on my XPS 13 9560 with Kaby Lake. I did not experience this on 16.04/16.10 and IIRC not even on 17.04. After a lot of hit and trial, I was able to fix the issue completely by disabling Intel PSR mode in Grub config. Change `i915.enable_psr=1` to `i915.enable_psr=0` in `/boot/grub/grub.cfg` fixed the problem for me but I think this disables some power saving features. To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1714749/+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
