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reannual

Member

From: Denmark

Registered: 2013-04-11

Posts: 21

Website

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

OH MY GOD! Am I hallucinating or is this bug actually fixed?

Well, are you? Or is it? When time came for an overhaul of my installation I picked a more conservative distribution release (with Nvidia driver version 331.something) partly because of this bug. But I'd be curious to know if it's safe to come out...

InspectorMustache

Member

Registered: 2014-01-18

Posts: 10

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

I'm not a hundred percent sure but seems alright for the most part. Might not be completely fixed but it's far from the mess we had to put up with before. At least for me.

PootisBird

Member

Registered: 2014-04-16

Posts: 125

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

I've tried GNOME about a week ago. This bug still exists, just less pronounced. Back to KDE.

max.bra

Member

From: Bologna - Italy

Registered: 2008-06-02

Posts: 93

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

for those afflicted, can you try these settings in your running xorg session:

$ nvidia-settings -a InitialPixmapPlacement=0
$ nvidia-settings -a GlyphCache=1

Ropid

Member

Registered: 2015-03-09

Posts: 1,069

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

I just tried NVIDIA's 349.16 drivers and it's still bugged for me. I mean the issue where for example the text box element of Terminal or gedit sometimes (or often) do not show the last change.

ventieldopje

Member

Registered: 2015-06-22

Posts: 1

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

for those afflicted, can you try these settings in your running xorg session:

$ nvidia-settings -a InitialPixmapPlacement=0
$ nvidia-settings -a GlyphCache=1

I can confirm these settings solve the issue (using nvidia 352.21-1)

omer666

Member

Registered: 2011-01-26

Posts: 70

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

for those afflicted, can you try these settings in your running xorg session:

$ nvidia-settings -a InitialPixmapPlacement=0
$ nvidia-settings -a GlyphCache=1

I can confirm these settings solve the issue (using nvidia 352.21-1)

It does, but at the expense of very laggy performance. Almost unusable on Core i7 4770 and GTX 660.
I almost prefer having to bear with the bug.

Last edited by omer666 (2015-06-30 18:05:59)

Ropid

Member

Registered: 2015-03-09

Posts: 1,069

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

It does, but at the expense of very laggy performance. Almost unusable on Core i7 4770 and GTX 660.
I almost prefer having to bear with the bug.

It's the same for me with those nvidia-settings options. The performance is unacceptable when using those settings.

Instead, try the following environment variable:

CLUTTER_PAINT=continuous-redraw

This seems to fix things for me, and I can't feel any real downsides caused by it.

What this seems to do is make gnome-shell refresh the screen at 60 fps. You can see that by restarting gnome-shell from a terminal window like this:

$ ( CLUTTER_SHOW_FPS=1 gnome-shell --replace & )

It will print the fps it runs at to the terminal. The normal behavior seems to be that it won't update the screen if there are no changes, so when just staring at the desktop the fps drop to zero. With "CLUTTER_PAINT=continuous-redraw", things will run at 60 fps, so that works around the problem with the screen not getting updated for gedit or gnome-terminal.

This doesn't seem to do anything bad for my PC here. The graphics card load and clock rate stay low, and it stays cold despite things running at 60 fps. There's also no strange CPU load.

Last edited by Ropid (2015-07-01 01:01:39)

davcri

Member

From: Italy

Registered: 2015-04-29

Posts: 26

Re: Graphical glitches in Firefox under Gnome Shell, Nvidia

Thanks for sharing this fix, I'm testing it.
I have a Intel i7-2630QM and it's integrated GPU, where should I look to fix this problem ? Install an old mesa package ?

Last edited by davcri (2015-09-13 15:53:20)