Hi, I've decided to test the workaround without your patches on my i7 7500U (Intel HD Graphics 620). I don't need keystone effect correction and brief freeze when reconfiguring monitors is acceptable tradeoff for me. However, I've found one side effect: It has renamed HDMI1 to HDMI-1 and eDP1 to eDP-1. As a result, it broke my screen configuration scripts, so that my external screen was just scaled-up fullHD mirror of my laptop screen. But the solution was pretty easy: just adjust the screen names in the scripts.
I have observed no other drawbacks so far. Regards, Vít Šesták 'v6ak' On Thursday, December 24, 2020 at 3:21:30 AM UTC+1 jinoh....@gmail.com wrote: > When using some Intel integrated graphic cards on Qubes R4.0, screen > glitches may manifest after switching VTs or entering suspend mode. > > A known workaround does exist for this bug, which is to add a > configuration file with the following contents within > /etc/X11/xorg.conf.d: > > > Section "Device" > > Identifier "Intel Graphics" > > Driver "modesetting" > > Option "AccelMethod" "glamor" > > Option "DRI" "3" > > EndSection > > However, the X11 modesetting driver version in Fedora 25 has its own > drawbacks: > > * It freezes briefly when re-configuring monitors (e.g. plugging in an > external monitor or changing screen resolution) > * XRandR keystone support is buggy > > To remediate this, I've patched the Linux i915 driver and it has been > working fine for months. Only the patch for Linux 4.19 has been tested. > > If anyone is affected by the issue, please feel free to test the > follow-up patches and give some feedback here. > > See also: > > * https://github.com/QubesOS/qubes-issues/issues/5244 > * https://github.com/QubesOS/qubes-issues/issues/5377 > * https://github.com/QubesOS/qubes-issues/issues/5460 > > > Cheers, > Jinoh Kang > > -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/e7cd34f7-6e92-4c81-ad8f-9f550bbc2cb2n%40googlegroups.com.
