Arch Linux

root

Member

From: 127.0.0.1

Registered: 2012-04-13

Posts: 297

LightDM - Graphical corruption (X and ttys)

While I am still trying to fix LXDM and its lack of xsession-errors logging I have gone back to LightDM as a 'log working alternative' in order to (try to) fix the graphical problems that made me move away from it.

The problem consists of two parts:

The first one is related to whenever I restart/shutdown the computer my wallpaper is still visible (tried both with nitrogen and feh in case that was the problem) and then something similar to a 'scroll down' window appears (similar to a Quake like terminal) and green text (like an old terminal) on black background the restart/shutdown messages appear in an illegible way.
This prevents being able to see any noticeable messages/warnings.

The second part is that when I log out of f.e. XFCE (the other WM I use is Openbox) it happens sometimes that the Display manager loads correctly but any of the other ttys I switch adopts the appearance of an upper screen half with, again, a black background with the rest of the tty information in mostly illegible green letters.
The lower part of the screen appears with an indistinct blurry black colour.

Anyone else has experienced this when using this DM?

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\(o_X)/
                        'Cause I wanna be an Archy - An Archy in the UK // Sex Pistols

root

Member

From: 127.0.0.1

Registered: 2012-04-13

Posts: 297

Re: LightDM - Graphical corruption (X and ttys)

After some tests it seems that LightDM does not like my 1024x768 framebuffer (using vga=773) and this may be related to the screen corruption.

Once I remove it from the kernel line on the one hand XFCE shows me a black screen while restarting/shutting down (still no tty messages therefore) but on the other Openbox still shows corruption.
I mean, the screen ends up stuck with a different kind of graphic corruption, as if the programs running weren't that well shutdown by Openbox (XFCE even due to just showing a black screen?).
I haven't unfortunately been able to see if the tty corruption is 'fixed' too.

As a posible test, does anyone know how to do the same as suggested with regard to LXDM in the wiki (related to closing down the session and kill user processes) but with regard to LightDM?

I have tried to use the featured commands as a session-cleanup-script in LightDM's config
file but it didn't work.

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\(o_X)/
                        'Cause I wanna be an Archy - An Archy in the UK // Sex Pistols