[nouveau][XFCE] Do not see login screen after screen is blanked

[crysman]

I've just upgraded to 18.10 from 18.04. Now when power manager (or whoever) puts the screen to blank, I cannot login, because I do not see anything. Befeore the upgrade, mouse move or keypress led to login screen. Now does not.

Workaround:
When I go to terminal on tty1 and then back CTRL+ALT+F7, login screen appears.

Where is the problem and how to fix it please?

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: xorg 1:7.7+19ubuntu8
ProcVersionSignature: Ubuntu 4.18.0-20.21-generic 4.18.20
Uname: Linux 4.18.0-20-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.3
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
Date: Fri May 24 17:59:31 2019
DistUpgraded: 2019-05-24 13:40:45,847 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process “./xorg_fix_proprietary.py” (No such file or directory) (8))
DistroCodename: cosmic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. 2nd Generation Core Processor Family Integrated Graphics Controller [1043:1682]
 NVIDIA Corporation GF119M [GeForce GT 520M] [10de:1050] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. GF119M [GeForce GT 520M] [1043:1682]
InstallationDate: Installed on 2018-09-03 (263 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: ASUSTeK Computer Inc. U36SD
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-20-generic root=UUID=aa87c0a2-5b06-40fb-82dd-fbccd7c800e6 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to cosmic on 2019-05-24 (0 days ago)
dmi.bios.date: 07/12/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: U36SD.205
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: U36SD
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrU36SD.205:bd07/12/2011:svnASUSTeKComputerInc.:pnU36SD:pvr1.0:rvnASUSTeKComputerInc.:rnU36SD:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.family: U
dmi.product.name: U36SD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.10.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.10.2
version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3

[Daniel van Vugt (vanvugt)]

Please:

1. Reproduce the problem again.

2. Use your workaround to recover. Do not reboot.

3. Run this command:

   journalctl -b0 > journal.txt

4. Send us the file 'journal.txt'.

[crysman (crysman)]

OK, I've attached the log. Some info has been obfuscated (e.g. MAC addresses, computername, usernames)

Thank you.

I've also noticed that turning the computer off takes 1.5min when some apps are opened. This issue had been present in some previous releases, but got fixed later on, now it's here again. Might be related (?)

[crysman (crysman)]

Another piece of information:
It seems to be broken only once - at the first time. When I do the workaround and let it go blank again, no need to repeat it - just once every fresh boot seems to be enough. Weird...

[crysman (crysman)]

Please, any new findings/new info? It is very annoying! :/ and got worse. I must go to TTY1 and `killall light-locker` in order to be able to use computer again...

[crysman (crysman)]

PS: turning the computer off performs normally, there is no delay any more

[Theo Linkspfeifer (lastonestanding)]

I suggest that you upgrade to 19.10 and replace light-locker with the new xfce4-screensaver.

[crysman (crysman)]

replacing light-locker with xfce4-screensaver has fixed my problem (also working in 19.04) thanks

[Jarno Suni (jarnos)]

Does it work better with nvidia driver?

You could use another locker in 18.10 as workaround. See contents of /usr/bin/xflock4 script for hint. (You have to kill light-locker process and make it not start in "Session and Startup" dialog.