Linux 3.2: After resume screen only turned on after switching terminals

[Paul Menzel]

Am Samstag, den 30.06.2012, 21:00 +0200 schrieb Paul Menzel:
> Am Dienstag, den 26.06.2012, 07:42 +0200 schrieb Michel Dänzer:
> > On Mon, 2012-06-25 at 21:14 +0200, Paul Menzel wrote: 
> > > 
> > > resuming from suspend to RAM the monitor was indicating by a blinking
> > > LED that it did not receive any signal. This is the first time this
> > > happened. Resuming from suspend to RAM had worked without problems
> > > before (and probably will work again the next tries).
> > > 
> > > Logging in from SSH worked fine though. Switching terminal to tty1
> > > nothing changed but going back to tty7, where X was supposed to run),
> > > and the monitor detected a signal and showed the screensaver.
> > > 
> > > Switching to tty1 still does not work though, that means the monitor
> > > indicates that it gets no signal.
> > 
> > What about tty2-6 or any others?
> 
> It just happened again. tty2–6 also do not show anything.
> 
> > What does fbset -i say when the problem occurs?
> 
> I logged in over SSH not having switched the ttys yet. This is the
> result.
> 
>         $ fbset -i
>         
>         mode "1280x1024"
>             geometry 1280 1024 1280 1024 32
>             timings 0 0 0 0 0 0 0
>             accel true
>             rgba 8/16,8/8,8/0,0/0
>         endmode
>         
>         Frame buffer device information:
>             Name        : radeondrmfb
>             Address     : 0xd0142000
>             Size        : 5242880
>             Type        : PACKED PIXELS
>             Visual      : TRUECOLOR
>             XPanStep    : 1
>             YPanStep    : 1
>             YWrapStep   : 0
>             LineLength  : 5120
>             Accelerator : No
> 
> This does not differ though after having switched between ttys and
> getting a working X server again. The other ttys do not just show black.
> When switching from tty7 with the X server running to a console(?) tty
> then I shortly (half second) see some kind of test image, which contains
> four horizontal colored stripes red, green, blue and white(?).
> 
> I could not find anything in the output of `dmesg`, but
> `/var/log/syslog` contains several of the following lines.
> 
>         Jun 29 19:44:57 debian-host acpid: client 8677[0:0] has disconnected
>         Jun 29 19:45:08 debian-host acpid: client connected from 8677[0:0]
>         Jun 29 19:45:08 debian-host acpid: 1 client rule loaded

Does someone have an idea what the problem might be and how to fix it?


Thanks,

Paul
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