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roarinelk
Guru
Joined: 04 Mar 2004
Posts: 520
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 Posted: Mon Jun 08, 2015 7:35 am Post subject: KDE 5: I see only black windows |
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Hello,
I've installed KDE5 (kde-plasma/plasma-meta to be exact), but when I launch it, I see no desktop. I can see the
mouse cursor, and on right-clicks, the desktop context menu pops up. I select "desktop settings" and
a window opens up, with everything black inside. Only all kwin-configuration related windows and the
lockscreen show any content.
I did notice that when the mouse hovers above what is supposed to be the K-menu the cursor changes, same goes
for example for the invisble logout dialog when I hit ctrl-alt-delete. So the windows are there, I just don't see anything.
gfx driver is the nvidia blob. What USE flags do people who can use KF5 use with Qt5 and kwin?
Any hints appreciated! |
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FunzZy
n00b
Joined: 15 May 2006
Posts: 21
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| Posted: Fri Jan 22, 2016 10:19 pm Post subject: |
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Hi,
I got exactly the same problem !
I have found a workaround:
Changing the eselect opengl from nvidia to xorg-x11 fixes the problem.
So it seems this is related to the nvidia driver.
I have no more information about it, but now I am able to display a kde desktop.
If anyone has more information, please help !
Thanks. |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sat Jan 23, 2016 7:23 pm Post subject: |
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| That's bizarre... I used to have exactly the same bug on nvidia hardware 8-9 years ago when running compiz. They really haven't fixed it in that time? |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 9261
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| Posted: Sat Jan 23, 2016 7:27 pm Post subject: |
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| It appears to be a bug with eselect, currently. |
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BobWya
Apprentice
Joined: 12 Aug 2012
Posts: 228
Location: Cambridge,UK
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| Posted: Sat Jan 23, 2016 9:21 pm Post subject: |
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| Quote: | It's cool - I've got a working fix that I'm currently baking 
Surprise, surprise... it's all down to the broken open-eselect-1.3.1 implementation...
I've been polishing up my fixes today - so that hopefully they can get mainlined into the main Gentoo tree. Sadly that means I've got to test the re-modified media-libs/mesa and app-eselect/eselect-opengl packages first... I'll push them to my Layman Overlay when the testing is done...
Man, it's taken ~3 weeks to transition to Plasma 5 - but it's worth the wait - once you get it working!! Just as good - if not better than my Arch install of the same... Plasma 5 appears to be quite stable when your GL libraries aren't completely borked...
Bob |
Please could I request anyone experiencing issues (primarily with the Nvidia proprietary drivers and starting a Plasma 5 Sessions / SDDM) to test the following (pre-patched) packages:
media-libs/mesa::bobwya
app-eselect/eselect-opengl::bobwya
from my Layman Overlay bobwya
Please also see the Gentoo Bug report "Plasma 5 + Nvidia drivers 361.18 - only EGL support, no GLX support - unable to start Plasma 5 Session" for more information!!
Just remember to rebuild all packages depending on media-libs/mesa::bobwya !!
Ta
Bob
_________________
system: G751JT (ASUS-NotebookSKU); processor: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz; memory: 32GiB System Memory; display: GM204M [GeForce GTX 970M]; disk: 2048GB Samsung SSD 850;BD-CMB UJ172 S;1024GB Samsung SSD 850 |
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roarinelk
Guru
Joined: 04 Mar 2004
Posts: 520
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| Posted: Sun Jan 24, 2016 9:55 am Post subject: |
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I did manage to get it working, on another desktop with the nvidia blob. I don't know *exactly* what I did
to make it work, but I attribute it to removing the "egl" and "gles2" use flags from all qt5 builds.
@BobWya: I'll give your modified builds a try in a sec. |
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BobWya
Apprentice
Joined: 12 Aug 2012
Posts: 228
Location: Cambridge,UK
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| Posted: Sun Jan 24, 2016 11:25 am Post subject: |
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| roarinelk wrote: | I did manage to get it working, on another desktop with the nvidia blob. I don't know *exactly* what I did
to make it work, but I attribute it to removing the "egl" and "gles2" use flags from all qt5 builds.
@BobWya: I'll give your modified builds a try in a sec. |
Yeah, that sounds like the best build options to choose.
I don't have egl USE flag enabled for my dev-qt/qtgui:5 library (which should reduce the chance of breakage)...
You can easily see what GL libraries Plasma 5 is linking against. I guess you'd have to add these checks to a cron job to dump the output to a file - if you've got a black screen!!
On my system:
| Code: | ldd /usr/lib/libQt5Gui.so.5.5.1 | grep GL
libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 (0x00007f92107ec000)
libGLX.so.0 => /usr/lib64/opengl/nvidia/lib/libGLX.so.0 (0x00007f920e03f000)
libGLdispatch.so.0 => /usr/lib64/opengl/nvidia/lib/libGLdispatch.so.0 (0x00007f920dd30000) |
| Code: | ldd /usr/bin/kwin_x11 | grep GL
libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 (0x00007fa3cc7a8000)
libEGL.so.1 => /usr/lib64/opengl/nvidia/lib/libEGL.so.1 (0x00007fa3c8daf000)
libGLX.so.0 => /usr/lib64/opengl/nvidia/lib/libGLX.so.0 (0x00007fa3c6e83000)
libGLdispatch.so.0 => /usr/lib64/opengl/nvidia/lib/libGLdispatch.so.0 (0x00007fa3c6b75000) |
| Code: | ldd /usr/bin/sddm-greeter | grep GL
libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 (0x00007fc19fc45000)
libGLX.so.0 => /usr/lib64/opengl/nvidia/lib/libGLX.so.0 (0x00007fc19df54000)
libGLdispatch.so.0 => /usr/lib64/opengl/nvidia/lib/libGLdispatch.so.0 (0x00007fc19dc46000)
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It's not clear to me why Qt5 / KWin 5 is not respecting the:
| Code: | | LDPATH="/usr/lib32/opengl/nvidia/lib:/usr/lib64/opengl/nvidia/lib" |
env variable - in some circumstances - when this set by the existing eselect-opengl utility.
Perhaps I should try re-enabling the egl USE flag to break everything again
Bob
_________________
system: G751JT (ASUS-NotebookSKU); processor: Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz; memory: 32GiB System Memory; display: GM204M [GeForce GTX 970M]; disk: 2048GB Samsung SSD 850;BD-CMB UJ172 S;1024GB Samsung SSD 850 |
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frares
n00b
Joined: 02 Apr 2004
Posts: 20
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| Posted: Thu Jul 14, 2016 5:21 pm Post subject: |
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Any news on this issue?
I've just moved to KDE-5 and got the same effects as described by the original poster and followers.
Would like to use the nvidia (although proprietary) instead of xorg-x11 on "eselect opengl".
Thanks! |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 9261
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| Posted: Thu Jul 14, 2016 5:38 pm Post subject: |
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| Without any information from your side and previous history of Nvidia woes I'd say disable any mention of gles* and egl USE flag. |
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