[Bug 108349] New: Xserver opengl problems on i5-8259U

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108349

            Bug ID: 108349
           Summary: Xserver opengl problems on i5-8259U
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: caravena at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Hello,

Open bug in launchpad.net
https://bugs.launchpad.net/bugs/1797604

"I have installed 18.04.1 server on Intel NUC NUC8i5BEH with minimal xinit and
xserver-xorg-video-intel. But it has 2 major issues:
1. Huge Xorg CPU usage with intel driver...more than 110% on glxgears without
vsync (with modesetting driver Xorg has zero CPU usage and very good Opengl
performance)
2. on DRI3 glxgears it skip most frames and display one frame every 60-70
frames but reported FPS is doubled than on DRI2

to reproduce a problem install fresh server image of 18.04 and then install
minimal xinit+xserver-xorg-video-intel. Put 20-intel.conf to enable intel
driver. Run X by startx and then run glxgears.

20-intel.conf:

Section "Device"
   Identifier "Intel Graphics"
   Driver "intel"
   Option "TearFree" "true"
# Option "DRI" "3"
EndSection

P.S. Before 18.04 I tried 16.04 with HWE kernel...on stock Xserver and Intel
driver it just crash. On latest HWE xserver and HWE Intel driver it works the
same as 18.04 because it has the same versions. But with old 1.18 xserver and
HWE intel driver it works in DRI2 mode...Xorg CPU usage just 10% instead of
110% on xserver 1.19...The only problem - poor OPENGL performance (glxgears
5400 fps vs 8000 fps on 1.19 xserver)"

Best regards,
--
Cristian Aravena Romero (caravena)

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20181012/77960a22/attachment.html>