Messages in this thread | | | Date | Tue, 21 Sep 2010 15:10:33 -0700 | From | Randy Dunlap <> | Subject | Re: Any SYSRQ key to force mode switch to console mode when using KMS? |
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On Wed, 15 Sep 2010 19:40:37 +0200 Uwe Bonnes wrote:
> Hello, > > is there any SYSRQ key that forces the video system to console mode, > especially when using KMS and allows to work on.
sysrq-v help message says:
force-fb(V) = "Restore framebuffer console"
> Since going to KMS on a Thinkpad R50 with ATI Radeon RV250 via going from > Opensuse-11.2 to Opensuse-11.3 I experience frequent situations where I am > left with a black screen, with only ALT-SYSREQ-C switching the screen back > on and hard reboot as only chance to escape that situation. > > Situations that result in a black screen are: > > * Going with the mouse over the NOSCRIPT buttom in firefox. Load goes up and > screen goes black after some seconds. xorg.log ends with "Backtrace", but no > backtrace output... > > * Calling pm-hibernate on a system that has hibernated before. First > pm-hibernate/wake-up-per power buttom sequence is successfull. > > Disabling KMS results in very slow "kaffeine" full screen output... > > pm-hibernate and firefox/noscript worked pre-KMS on opensuse-11.2. > > Some traces of other people hitting the NOSCRIPT xorg crash and others > hitting the black unresponsive screen with KMS on RV250 are > found on the net, but I didn't find a conclusive resolution. > > Opensuse default kernel and the recent Opensuse 2.6.36-rc3 kernel-of-the day > were tested with no difference > > Thanks > > PS: I only follow linux-kernel via gmane.org, so if you need fast feedback, > please CC me.
--- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***
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