[Bug 664533] New: left display of dual monitor setup blanks periodically
https://bugzilla.novell.com/show_bug.cgi?id=664533 https://bugzilla.novell.com/show_bug.cgi?id=664533#c0 Summary: left display of dual monitor setup blanks periodically Classification: openSUSE Product: openSUSE 11.4 Version: Factory Platform: i686 OS/Version: SuSE Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: squan@web.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (compatible; Konqueror/4.6; Linux) KHTML/4.6.41 (like Gecko) SUSE I use a two monitor setup (left VGA and right DVI connected). After a "zypper dup" and restart the left display started persistently to show periodical blanking for 1s with a frequency of 31s in both console and X sessions. The right display is just fine. Before updating I had kernel 2.6.37-14.2 and upower-0.9.7-1.2, with the update I got kernel 2.6.37-16.1 and upower 0.9.8-2.1, xorg-x11-driver-video-radeonhd remained the same. My Graphics HW is Radeon X1300/X1550 with drivers "radeon" (2D) and "R300 Gallium (7.10)" ((3D) On each screen blank I observe process activity of upowerd (with top) while the upower monitoring commands report nothing at all. Reproducible: Always Steps to Reproduce: 1. Boot into runlevel 3 or 5 2. 3. Actual Results: Left display goes black every 31s for 1s -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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--- Comment #1 from Stefan Quandt
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Stefan Quandt
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Will Stephenson
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Karsten König
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Stefan Quandt
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--- Comment #6 from Karsten König
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--- Comment #7 from Stefan Quandt
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Jesús Sáenz
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John McManaman
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--- Comment #10 from Stefan Quandt
A hint for the cause is that stopping and starting "Display Management change monitor" service I deactivated this KDE service and rebooted but it has no effect: Periodical blanking of the left (VGA connected) screen still starts in early KDE startup.
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--- Comment #11 from John McManaman
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Pablo Alvarado
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--- Comment #13 from Jesús Sáenz
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--- Comment #14 from Pablo Alvarado
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--- Comment #15 from John McManaman
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--- Comment #16 from Jesús Sáenz
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Owen Savill
The display blanking does not occur on initial KDM login screen after a reboot. It starts in the early startup of the first KDE session. Then it persists after leaving KDE even if no Xorg is running (i.e in text console).
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Jaroslav Resler
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Will Stephenson
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Holden Aust
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Petr Uzel
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kk zhang
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Lars Müller
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Andreas Jaeger
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Vincent Untz
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--- Comment #25 from Vincent Untz
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Vincent Untz
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