[Bugme-new] [Bug 13453] New: xset dpms force off with Intel X3100 graphics causes up to ~1s system-wide latency

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Thu Jun 4 02:31:44 PDT 2009


http://bugzilla.kernel.org/show_bug.cgi?id=13453

           Summary: xset dpms force off with Intel X3100 graphics causes
                    up to ~1s system-wide latency
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.29.4
          Platform: All
        OS/Version: Linux
              Tree: Fedora
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI)
        AssignedTo: drivers_video-dri at kernel-bugs.osdl.org
        ReportedBy: theholyettlz at googlemail.com
        Regression: No


Created an attachment (id=21746)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=21746)
Output from strace -r xset dpms force off

Running xset dpms force off turn off the display causes a spike of kernel-mode
CPU activity and around 1 second of system-wide latency (repeating sound from
the audio buffer, etc.).

The following kernel, xorg driver and libdrm versions are installed:
kernel-2.6.29.4-167.fc11.x86_64
xorg-x11-drv-intel-2.7.0-7.fc11.x86_64
libdrm-2.4.6-7.fc11.x86_64

Attached is the output from strace -r xset dpms force off.

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