[Bug 101802] New: Can not get 60HZ monitor refresh rate

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jul 16 10:43:24 UTC 2017


            Bug ID: 101802
           Summary: Can not get 60HZ monitor refresh rate
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: iphone1825 at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 132708
  --> https://bugs.freedesktop.org/attachment.cgi?id=132708&action=edit
dmesg and xorg.log

When I set native monitor mode 1920x1200-60Hz, refresh rate is not switches to
60Hz. It is 42Hz only. Mode 1280x1024 works with 60Hz refresh rate. 

xrandr --output DisplayPort-0 --mode 1920x1200 --rate 60  doesn't help. 

GALLIUM_HUD="fps" glxgears  shows 42HZ as well as monitor OSD menu. 

Linux mint 18 live CD shows 42Hz too, but LMDE2 edition working with 60Hz 

Help please to fix it!

dmesg and xorg.log is attached

OS: Debian 9.0, Driver: 7.7 (7.8)
Monitor: Dell 24" 1920x1200
Video card: ATI HD5870

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