[00:11] <tomreyn> klebers: hmm, for somereason, gdm3 fails to start at all with 5.4.0-67
[00:24] <tomreyn> klebers: common X initialization with this Xorg HWE on 18.04 LTS, here with kernel 5.4.0-66-generic (that's now in bionic/main): https://paste.ubuntu.com/p/C5pw4CPymC/
[00:25] <tomreyn> klebers: broken X initialization with this Xorg HWE on 18.04 LTS, here with kernel 5.4.0-67-generic (that's now in bionic-proposed/main): https://paste.ubuntu.com/p/nNCN7FmgPm/
[00:25] <sarnold> 'common'? or 'working'?
[00:26] <tomreyn> 5.4.0-66-generic works fine, except for the bug i referred to the other day:
 this bug https://gitlab.freedesktop.org/drm/amd/-/issues/1427 recently made it into bionic's 5.4.0-66-generic #74~18.04.2-Ubuntu
[00:27] <tomreyn> 5.4.0-65-generic and lower work fine, and don't have this (restore from dpms) bug
[00:28] <tomreyn> 5.4.0-67-generic (in bionic-proposed) fails to initialize amdgpu
[00:28] <tomreyn> "(II) AMDGPU(0): [KMS] drm report modesetting isn't supported." looks relevant
[00:31] <tomreyn> ah, crap, i forgot to install linux-modules-extra-5.4.0-67-generic
[00:32] <tomreyn> trying again on 5.4.0-67-generic
[00:33] <jeremy31> tomreyn: shouldn't it get installed as a dependency?
[00:35] <tomreyn> not when you manually install updated kernel packages apparently
[00:35] <tomreyn> anyways, linux-modules-extra-5.4.0-67-generic help X start fine. now let's see fpr the return-from-dpms thing
[00:36] <tomreyn> that's fixed as well.
[00:37] <sarnold> oh man I've wasted so much time with a missing -extra package before :(
[00:39] <tomreyn> kleber: TL;DR: yes, 5.4.0-67-generic fixes https://gitlab.freedesktop.org/drm/amd/-/issues/1427 for me on 18.04.2 with Xorg HWE, gdm3 -> gnome-shell, Radeon RX 580
[09:32] <klebers> tomreyn, great, thanks for testing it!
[09:38] <klebers> tomreyn, do you remember how exactly you've installed the new kernel at first? When you update/install the meta package (likely linux-generic for example) it should pull the -modules-extra pkg as well