-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 control: forcemerge 870641 -1
On Sun, 2020-10-18 at 10:23 +0200, franck wrote: > Package: xfce4-power-manager > Version: 1.6.1-1 > Severity: grave > > Dear Maintainer, > > [ Bug description ] > Bug happens when the screen auto-locks due to user inactivity. Then the > screen switches off. > To easily test that, set following to 1 min or so > Xfce menu Applications -> Settings -> Power Manager -> Display -> 'Switch > off after' > > After such auto-lock, it appears not possible to get back the X session > anymore. > Because > - by moving mouse or typing on keyboard the screen does not wake up. It > stays off, black. > - with Ctrl+Alt-F7 one gets > This session is locked > You’ll be redirected to the unlock > dialog automatically in a few seconds > but after waiting a few seconds the screen switches off again. > => no way to get to the lightdm greeter. > In both cases: not possible to get back the running X session anymore. The lightdm greeter is on tty8, so try with Ctrl-Alt-F8. > > => I filled this bug against xfce4-power-manager > But I have no clue whether xfce4-power-manager > - processes the locking completely by itself ? > - just prepares locking, like deactivating keyboard/mouse? and then trigger > like light-locker-command --lock... > - only asks another package to do the full locking procedure. > > > > Bug occurred under (at least) both kernels: > linux-image-4.19.0-11-amd64-unsigned 4.19.146-1 > linux-image-5.8.0-0.bpo.2-amd64 5.8.10-1~bpo10+1 > > > > Also this bug gives a bad image to the user: > - 'system crashed' > - wondering what is the cause: > - is my graphic card not properly waking up ? > - or a bug in kernel ? > - or Xorg ? > - or light-locker ? > ... > Thus they are probably numerous of open bugs that could be closed by fixing > this bug. Actually it's (or should be) already fixed in stable. > > > [ Bugs reported against other packages, & that seem linked to this bug ] > Bugs in source package light-locker > #906902 System left idle makes system freeze > #870641 light-locker, lightdm: screen stays off after resume > and all the merged one: > 805711, 846278, 868087, 908329, 922095, 929461, 929834, 931555 > #835461 light-locker breaks suspend/resume with nvidia legacy 340 drivers > Bugs in source package lightdm > #867620 lightdm unlock screen randomly doesn't appear With all those bugs already opened and the mess we're already in, why opening *yet another one*? Honestly it adds more confusion than anything at that point. As indicated in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870641#218 the bug *should* be fixed in 10.5 with kernel 4.19.0-10. You indicated that you tested with linux-image-4.19.0-11-amd64-unsigned 4.19.146-1 Can you retry with that kernel and check you have the “atomic” message in the kernel log: broken atomic modeset userspace detected, disabling atomic Regards, - -- Yves-Alexis -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAl+gRRsACgkQ3rYcyPpX RFvT2Qf+K/oere1FxlQi2jg+f/iL6ejQLL/jowc5R3pg34Jp3jJMPvWe6HYz7c2L +88W5GqwhI88Qk5oiGMdEf+3s8eKwoJi2kBp92g6HFyk6Xjbe7vzs7FOhUeeHadE 9ezgXfKzrDlhM4Knm3JtTEgKbgnEeOSop78hfzkaTrH94sbR75taK8yMo7Yuec3i gIezlzkkOTuT37oDzrG2hyD9A/mEnQTWw3pw97kqHZo3meEtTjwZ9/vutd2MuzQM zJG5qpCLH7G8fywBWzW6SZSDhChAo44Phz2fHDmlPLKtHUTAn03nHPwkdgUgg0Kw 3iaNBwgSZaPfZrPRh4yIhhN9rUodhQ== =SWS6 -----END PGP SIGNATURE-----