Red Hat Bugzilla – Bug 785901
second screen doesn't stay blank
Last modified: 2013-02-13 17:00:49 EST
Description of problem:
I'm running an x86_64 install with two monitors, driven by a Radeon X1300 video card (and the distro-provided driver, not a vendor driver). About a third of the time, when I hit ctl-alt-l to lock my screens, one of them doesn't stay blanked. Both dim, but then the secondary screen pops back to life with everything present on that screen clearly visible. No input seems to be accepted, input brings up the unlock dialogue on the main monitor that properly stayed black.
Version-Release number of selected component (if applicable):
$ rpm -q gnome-screensaver
Run a dual-head setup. Try to lock the screens. May require an active (front-most) application window on the secondary monitor, not certain (definitely seems to have always been the case when I've seen this happen).
Feels oddly similar to bug 472596, which I reported myself over 3 years ago, but which was apparently fixed.
I can verify this also on my box. Fedora 16/x86_64. lspci reports the graphics card as nVidia Corporation G86 [GeForce 8500 GT]. xorg nv driver. Single card with two outputs. First monitor on DVI output. Second monitor on VGA output.
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