Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Andrea Borgia wrote on 14 Sep 2019: > On two systens with fairly different hardware (a 6yr old laptop I am > using now on holiday and my new home desktop), with kernel 5.2.0 (and > possibly as low as 5.0.11) the following happens: boot, login X, > hibernate (ok), resume (also ok), unlock xfce4, stare at mouse pointer > alone on a black screen. The pointer can move, there is sound > (Telegram notifications, for example), and only keycombo that works is > the one to go back to console. Since I upgraded to bullseye some time ago, I experience the same problem. I've spent several hours researching online and trying to debug it, but so far to no avail. I replaced light-locker by xscreensaver, but the problem persists. In my case, there is an interesting twist: I do experience this problem with my ThinkPad X220 laptop when undocked, and when docked at home (single external screen). However, when docked at work, where two external screens are attached, I have never ever experienced this problem. The X220 can handle two screens at the same time, so this problem could be somehow related to whether the built-in monitor is active or not. This must be the most annoying problem that I encounter in the 20 years that I've been using Debian! My current workaround is to work in "presentation mode" which disables and auto locking of the screen. I would be very grateful for any pointers, or at least a bug number that I can follow. As far as I can tell this is not #913062, nor #929834, nor #846278. I do not have light-locker installed. Cheers Christoph PS. Andrea, please excuse me sending this message not only to the list but also to you directly. I am not sure whether you follow this list regularly, and I'm interested to know whether you have found a solution by now.
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Il 03/10/19 17:55, Mike Kupfer ha scritto: If you're asking how to use xscreensaver specifically (e.g., instead of Xfce's own locker (new in 4.14)), you can specify a particular locker using the Xfce settings editor. (Set /general/LockCommand to whatever you want; take a look at the /usr/bin/xflock4 script for reference.) Yes, that was indeed my question, thanks for the pointer! Weird. I have no idea what's going on there. I have a VirtualBox VM with Testing installed (VBoxVGA graphics controller), and the display looks just fine for me. The desktop has a Ryzen G processor, G meaning it comes with its own embedded GPU. It ran fine until before my holidays (and a bunch of updates), so far I've ruled out HW (other OS works fine), kernel version (happens with last known working version and also current kernel in testing) and desktop environment (happens with KDE and xfce4, lxqt has even worse graphic corruption issues), still have to rollback xserver and related stuff to check that. Andrea.
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Andrea Borgia wrote: > Il 14/09/19 22:30, Mike Kupfer ha scritto: > > > Andrea Borgia wrote: > >> how do I get xfce to use xscreensaver as > >> locking when suspending? > > > For Xfce4 4.12, it's on the Advanced tab of the Session and Startup > > settings. [...] > I have xfce4 4.14 but I don't see anything interesting in that menu, Yeah, in 4.14 it's back in the Power Manager settings (System tab). Or at least, that's where the control is to enable locking. If you're asking how to use xscreensaver specifically (e.g., instead of Xfce's own locker (new in 4.14)), you can specify a particular locker using the Xfce settings editor. (Set /general/LockCommand to whatever you want; take a look at the /usr/bin/xflock4 script for reference.) > [1] image is fine until the login screen in X, after login it is an > odd shade of green, mostly after resume but right now it happened on a > fresh boot as well. System responds fine via ssh but chvt 1 does not > fix it, I need to reboot. So far, I noticed that clearing > ~/.config/xfce4 right after reboot and before logging in will give me > a working display. Weird. I have no idea what's going on there. I have a VirtualBox VM with Testing installed (VBoxVGA graphics controller), and the display looks just fine for me. cheers, mike
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Il 14/09/19 22:30, Mike Kupfer ha scritto: Andrea Borgia wrote: how do I get xfce to use xscreensaver as locking when suspending? For Xfce4 4.12, it's on the Advanced tab of the Session and Startup settings. Sorry for the delay, Mike: I had a busy schedule and opted for using a "safe" kernel on the laptop until I had more time to experiment. I have xfce4 4.14 but I don't see anything interesting in that menu, see screenshot. This and the fact xfce is giving me crap [1] also on the desktop makes me feel like trying to switch environment altogether :D Thanks for the assistance, though. Andrea. [1] image is fine until the login screen in X, after login it is an odd shade of green, mostly after resume but right now it happened on a fresh boot as well. System responds fine via ssh but chvt 1 does not fix it, I need to reboot. So far, I noticed that clearing ~/.config/xfce4 right after reboot and before logging in will give me a working display.
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Andrea Borgia wrote: > how do I get xfce to use xscreensaver as > locking when suspending? For Xfce4 4.12, it's on the Advanced tab of the Session and Startup settings. mike
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Hello, Christopher. If this is the same problem I had (and discussed prior on this list), there is a bug in light-locker that seems to cause this behavior randomly even without hibernation. Consider switching from light-locker to xscreensaver; this resolved the problem for me. Thing is, I never ever have any problem if I lock the screen but do not suspend, though. Anyhow, how do I get xfce to use xscreensaver as locking when suspending? See also: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913062 Killing light-locker gets me absolutely nowhere when it happens, I had already tried it :( Andrea.
Re: black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
On 9/11/2019 9:58 AM, Andrea Borgia wrote: > unlock xfce4, stare at mouse pointer alone on a black screen If this is the same problem I had (and discussed prior on this list), there is a bug in light-locker that seems to cause this behavior randomly even without hibernation. Consider switching from light-locker to xscreensaver; this resolved the problem for me. If it resolves the problem for you as well then I would hesitate to say immediately that it's a kernel bug, even if the kernel version is somehow related to the problem. See also: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913062 -- Chris Howie http://www.chrishowie.com http://en.wikipedia.org/wiki/User:Crazycomputers If you correspond with me on a regular basis, please read this document: http://www.chrishowie.com/email-preferences/ PGP fingerprint: 2B7A B280 8B12 21CC 260A DF65 6FCE 505A CF83 38F5 IMPORTANT INFORMATION/DISCLAIMER This document should be read only by those persons to whom it is addressed. If you have received this message it was obviously addressed to you and therefore you can read it. Additionally, by sending an email to ANY of my addresses or to ANY mailing lists to which I am subscribed, whether intentionally or accidentally, you are agreeing that I am "the intended recipient," and that I may do whatever I wish with the contents of any message received from you, unless a pre-existing agreement prohibits me from so doing. This overrides any disclaimer or statement of confidentiality that may be included on your message.
black screen (only mouse visible) after resume with xfce4 on kernel 5.2.0
Hi. On two systens with fairly different hardware (a 6yr old laptop I am using now on holiday and my new home desktop), with kernel 5.2.0 (and possibly as low as 5.0.11) the following happens: boot, login X, hibernate (ok), resume (also ok), unlock xfce4, stare at mouse pointer alone on a black screen. The pointer can move, there is sound (Telegram notifications, for example), and only keycombo that works is the one to go back to console. Additionally, I noticed that this tends to happen only after the system was suspended for quite a while, i.e. if I hibernate it and soon afterwards resume it nothing strange happens. If I let it sleep for the night, the next morning it will surely give me a black screen. When I say that hibernate and resume are OK, I mean that the text console works just fine and the system is in no way thrashing. Very important: on the same laptop, if I reboot with an older kernel, say 5.0.2, after unlocking it I can use X just fine even after many cycles. I don't have the desktop at hand until I'm back home, but I first observed this issue around 5.0.11 (see [1]) Now the question: should I file this as a bug against the kernel package or against xfce4? On one hand, the fact that changing kernel creates or prevents the issue seems to me a very strong indication this is a kernel bug, on the other hand I am not really able to try a different desktop environment at the moment (lack of time, lack of RAM and CPU power) and cannot completely rule out a userspace issue (some change in the kernel not properly accepted by the application) Has anyone else experienced something similar? I've had a look at the logs and I don't see anything obviously wrong or different from one case to the other. Thanks, Andrea. [1] https://github.com/M-Bab/linux-kernel-amdgpu-binaries/issues/81#issuecomment-489403571)
