blank screen on dell x300 after resume

phiberoptikk · 10-31-2007, 11:18 AM

Hey,

I can't get the display on a Dell Latitude x300 to come back on after a resume from suspend to ram.

I've googled a lot and none of the solutions seem to work.

I noticed:
/proc/acpi/video/GFX0/LCD/state
is 0x1f when it's on,

when I resume...
/proc/acpi/video/GFX0/LCD/state
is 0x1d and I can't get it to switch.

Any suggestions? The machine is still on and able to be ssh'd into when the screen is blank.

shafty023 · 11-01-2007, 11:01 AM

Suspend to ram on Linux is still very buggy. Have you tried alternate consoles? ALT+F1 or ALT+F2 or ALT.......+F6

phiberoptikk · 11-01-2007, 02:45 PM

Yeah, tried pretty much everything. Switching to consoles, running i810switch, echo'ing stuff to /dev entries...

I guess the essential suspending features work, as far as bringing everything back up (devices, network, etc) but I can't find a way to reset the intel 855 video.

I found this webpage which has some other steps...I'll try it

phiberoptikk · 11-02-2007, 12:45 PM

For anyone else reading this...I did get suspend to ram working almost 100% with this script (it was a comment on website in my last post, modified for Fedora, no more /proc/acpi/sleep)

/etc/acpi/events/lid.sh:

Code:

STATEFILE=$(echo /proc/acpi/button/lid/*/state | head -1)
[ -f $STATEFILE ] || die "Unable to determine state of lid."
STATE=$(awk '{ print $2 }' < $STATEFILE)

case "$STATE" in
    "open")
        #wake up
        vbetool post
        vbetool vbestate restore < /tmp/savedscreen
        chvt 7
        rm /tmp/savedscreen
        ;;
    "closed")
        #put to sleep
        chvt 1
        vbetool vbestate save > /tmp/savedscreen
        sync
        echo "mem" > /sys/power/state
        ;;
esac

/etc/acpi/events/lid.conf:

Code:

event=button[ /]lid
action=/etc/acpi/actions/lid.sh

Thanks to the original author...

I haven't tested any external devices like USB etc, the only rare problem I had is the video corrupting itself after coming back from resume, then having to restart X or sometimes the laptop.