Arch Linux

Gravarty

Member

Registered: 2022-03-15

Posts: 6

Intel Arc B580 | Only half framerate on KDE Wayland

Hey everyone, I've just upgraded from my Intel Arc A380 to the new B580. Everything works fine, and it's using the new "Xe" driver. Looking at lspci, it seems the new B-Series doesn't even support the legacy i915 drivers.

Anyway, in KDE Wayland session, I always get half the framerate. So when choosing 60Hz, it runs at 30Hz, and at 75Hz, it's 38Hz. I've been googling for hours now and couldn't find any solutions.

It works just fine on X11.

Intel Arc B580:

03:00.0 VGA compatible controller: Intel Corporation Battlemage G21 [Arc B580] (prog-if 00 [VGA controller])
        Subsystem: Intel Corporation Device 1100
        Flags: bus master, fast devsel, latency 0, IRQ 161
        Memory at 82000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 4000000000 (64-bit, prefetchable) [size=16G]
        Expansion ROM at 83000000 [disabled] [size=2M]
        Capabilities: [40] Vendor Specific Information: Len=0c <?>
        Capabilities: [70] Express Endpoint, IntMsgNum 0
        Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable+ 64bit+
        Capabilities: [d0] Power Management version 3
        Capabilities: [100] Alternative Routing-ID Interpretation (ARI)
        Capabilities: [110] Null
        Capabilities: [200] Address Translation Service (ATS)
        Capabilities: [420] Physical Resizable BAR
        Capabilities: [400] Latency Tolerance Reporting
        Kernel driver in use: xe
        Kernel modules: xe

Resolution options:

Screen 0: minimum 16 x 16, current 2560 x 1440, maximum 32767 x 32767
DP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
   2560x1440     74.89*+
   1920x1440     74.89 
   1600x1200     74.88 
   1440x1080     74.92 
   1400x1050     74.87 
   1280x1024     74.90 
   1280x960      74.86 
   1152x864      74.82 
   1024x768      74.67 
   800x600       74.91 
   640x480       74.77 
   320x240       73.82 
   1920x1200     74.93 
   1680x1050     74.89 
   1440x900      74.85 
   1280x800      74.76 
   1152x720      74.72 
   960x600       74.84 
   928x580       74.58 
   800x500       74.87 
   768x480       74.71 
   720x480       74.51 
   640x400       74.23 
   320x200       72.67 
   2048x1152     74.89 
   1920x1080     74.91 
   1600x900      74.89 
   1368x768      74.73 
   1280x720      74.78 
   1024x576      74.80 
   864x486       74.45 
   720x400       74.23 
   640x350       74.53

Last edited by Gravarty (2025-04-02 13:42:30)