[Bug 1827790] Re: Dell XPS 13 9380 - Screen brightness flashes
Hello, thanks for your reply. I have tested that kernel and I did not notice any such problem! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1827790] Re: Dell XPS 13 9380 - Screen brightness flashes
Thanks & sorry for belated response. I've never manually installed a new kernel (and am not sure how to proceed about checking integrity, etc.). Is there any resource you'd advice to get info on the topic? Thanks in advance. For now I can confirm that since I added this to the kernel options, I have had 0 occurrences of the bug over the last 3 weeks. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1827790] Re: Dell XPS 13 9380 - Screen brightness flashes
So it seems that it does away with the following kernel option: i915.enable_psr=0 It seems from some Dell user forum that some have had the same issues on Windows and disabling the panel self refresh worked for them so I was searching along these lines. I'm certain it's not a "clean" fix however to deactivate a measure that's suppose to save battery. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1827790] Re: Dell XPS 13 9380 - Screen brightness flashes
I have also been trying to see what are the packages difference between the OEM version and 19.04 since I suspect that Dell might have addressed this issue in their version. I have a list of all packages that were on the OEM but that might be tedious. If we contacted Dell directly, would they be able to help narrow it down / provide packages that they set up on the OEM? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1827790] Re: Dell XPS 13 9380 - Screen brightness flashes
Hello all, I believe that I have this same bug, also after a 19.04 fresh install. I initially posted on that bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1826125 but they kindly directed me here. Of note, I am glad you tried wayland as I wanted to try if that made any difference. I have tried passing different kernel parameters (though not all combinations) namely: First try: i915.edp_vswing=2 Second try: i915.fastboot=1 i915.edp_vswing=1 i915.preliminary_hw_support=1 intel_idle.max_cstate=1 acpi_backlight=vendor acpi.osi=Linux (see https://www.reddit.com/r/linuxquestions/comments/ayi4n6/flickering_on_laptops_with_a_4k_screen_and_intel/) but that did not seem to make any difference apart from disabling the backlight controls It somewhat feels good to have that identified as a bug. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
