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cord
Guru
Joined: 28 Apr 2007
Posts: 346
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 Posted: Sat Mar 09, 2019 5:52 pm Post subject: [solved]Intel mobile 945GM with modern drivers |
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Hello. I have 945GM integrated video card. It was working well with intel (i915) driver when there was mesa-13 (it has OpenGL 2.1). But since the 17 has come, I get the crashes or big slowness in some KDE settings menu tabs.
The default configuration for my GPU (as wiki suggest) is:
| Code: | | [ebuild R ] media-libs/mesa-18.2.8::gentoo USE="classic dri3 egl gallium gbm llvm wayland -d3d9 -debug -gles1 -gles2 -lm_sensors -opencl -osmesa -pax_kernel -pic (-selinux) -test -unwind -vaapi -valgrind -vdpau -vulkan -xa -xvmc" ABI_X86="(64) -32 (-x32)" VIDEO_CARDS="intel i915 (-freedreno) -i965 (-imx) -nouveau -r100 -r200 -r300 -r600 -radeon -radeonsi (-vc4) -virgl (-vivante) -vmware" 0 KiB |
which sets OpenGL 1.4. Two things are very annoying. First, there is constant CPU load ~7-10% in the idle (mostly plasmashell process). The second, when I open KDE_menu -> SystemSetting -> Workspace Theme (or 'Icons') the window is drawed very slow (half a minute). The same thing is when I try to configure desktop wall paper.
If I recompile mesa with USE="-classic -video_cards_intel" it sets OpenGL 2.1. It doesn't load CPU in the idle, and no problems with "Workspace Theme" tab, but there is crashes like in #665024.
Well, what can I do with it? Is there way to use 945GM without problems nowadays?
ps I also read this, but it's different.
Last edited by cord on Wed Mar 13, 2019 1:52 pm; edited 1 time in total |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sat Mar 09, 2019 6:38 pm Post subject: |
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KDE likes to blame the graphics driver for any and all crashes, but after years of seeing people having problems with every kind of GPU, and only in KDE 5, I'm not sure I believe them any more.
Try it with a different WM. |
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CaptainBlood
Advocate
Joined: 24 Jan 2010
Posts: 3999
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cord
Guru
Joined: 28 Apr 2007
Posts: 346
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| Posted: Sat Mar 09, 2019 7:38 pm Post subject: |
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| Hah, your video card is 9th generation! You can use modesettings internal Xorg driver. My is 3rd, and modesettings support are for >=4. |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sat Mar 09, 2019 7:44 pm Post subject: |
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| You _can_ force the modesetting/glamor driver to load on a 945, I've done it once before. Performance is abysmal though, don't bother. |
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Gusar
Advocate
Joined: 09 Apr 2005
Posts: 2665
Location: Slovenia
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| Posted: Sun Mar 10, 2019 8:37 am Post subject: |
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Yeah, glamor won't work well on these old things. If you're going with the modesetting driver, your best option is to *disable* glamor with a config like this (save as /etc/X11/xorg.conf.d/20-modesetting.conf) | Code: | Section "Device"
Identifier "some old crap"
Driver "modesetting"
Option "AccelMethod" "none"
EndSection
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There's also the possibility to fake the supported OpenGL version, could work: | Code: | | export MESA_GL_VERSION_OVERRIDE=2.1 MESA_GLSL_VERSION_OVERRIDE=120 |
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cord
Guru
Joined: 28 Apr 2007
Posts: 346
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| Posted: Sun Mar 10, 2019 5:12 pm Post subject: |
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| Thank you! Looks like it's the best it can be. |
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cord
Guru
Joined: 28 Apr 2007
Posts: 346
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| Posted: Mon Nov 02, 2020 3:36 pm Post subject: |
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UPDATE:
Thanks to ArchLinux wiki, it is possible to restore OpenGL 2.1 back to i945  |
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