[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
This bug still hasn't been fixed 7 months later. I just switched to the hwe kernel of 16.04 and I am likewise affected. This may have been mentioned in upstream but the flickering happens only when framebuffer hasn't changed. If you constantly move your mouse, it'll stop. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
On the bright side, upstream has ameliorated this issue considerably in drm-intel-nightly and the vanilla 4.9-rc1 kernels. So far the upstream bug has suggested two patches for kernel 4.8.x that reduce the flickering - with those patches, it only occurs a few times a day for me instead of every few seconds or minutes. Maybe we could cherry-pick those patches? ** This bug is no longer a duplicate of bug 1626935 [yakkety] desktop is black and/or flickering after plugging in a second monitor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
This is *not* a duplicate of bug #1626935. For a start, it occurs whether the monitor is plugged in at reboot or not, and it refers to a different kind of flickering. I believe I've also seen the flickering referred to in that bug, and it's a constant flickering of part or all of the screen, whereas the flickering mentioned here is where the entire laptop screen goes black temporarily, for half a second or sometimes longer, and then returns to normal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
*** This bug is a duplicate of bug 1626935 *** https://bugs.launchpad.net/bugs/1626935 Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1626935, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find. ** This bug has been marked a duplicate of bug 1626935 [yakkety] desktop is black and/or flickering after plugging in a second monitor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
It's not fixed in the 4.8.0-generic kernel. Additionally, that kernel shows flickering artefact windows when using two monitors, as reported here: https://bugs.freedesktop.org/show_bug.cgi?id=97596 ** Bug watch added: freedesktop.org Bugzilla #97596 https://bugs.freedesktop.org/show_bug.cgi?id=97596 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1627214] Re: Random display flickering on Kernel 4.8 with dual-screen
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627214 Title: Random display flickering on Kernel 4.8 with dual-screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627214/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
