[X2Go-Commits] [live-build-x2go] 33/47: improved code to fix blank screen happening with DisplayPort and some buggy TFTs (xset q reports "Monitor is on" even though it is pitch black) - second attempt
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Wed Jan 24 18:21:49 CET 2018
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x2go pushed a commit to branch feature/openbox-magic-pixel-workaround
in repository live-build-x2go.
commit 6d74aeb823b2e2980f7f38463930d67d77686e6a
Author: Stefan Baur (BAUR-ITCS) <kontakt at baur-itcs.de>
Date: Tue Jan 16 02:49:52 2018 +0100
improved code to fix blank screen happening with DisplayPort and some buggy TFTs (xset q reports "Monitor is on" even though it is pitch black) - second attempt
---
.../lib/live/config/2900-x2go-thinclientconfig | 20 +++-----------------
1 file changed, 3 insertions(+), 17 deletions(-)
diff --git a/config/includes.chroot/lib/live/config/2900-x2go-thinclientconfig b/config/includes.chroot/lib/live/config/2900-x2go-thinclientconfig
index aefc735..0fdaac5 100755
--- a/config/includes.chroot/lib/live/config/2900-x2go-thinclientconfig
+++ b/config/includes.chroot/lib/live/config/2900-x2go-thinclientconfig
@@ -97,24 +97,10 @@ openbox &
echo -en "\n\$(date +'%F | %T | ')'\$0' spawned OpenBox." | tee -a /dev/tty8
# code to fix blank screen happening with DisplayPort and some buggy TFTs (xset q reports "Monitor is on" even though it is pitch black)
-# it seems that a simple
-# xset dpms force standby ; xset dpms force on
-# isn't enough (doesn't always help),
-# so let's add some resiliency and logging
-
if grep -q '\W*blankdpmsfix\W*' /proc/cmdline; then
- while xset q | grep -q "Monitor is On" ; do
- while ! xset q | grep -q "Monitor is in Standby" ; do
- echo -en "\n\$(date +'%F | %T | ')'\$0' Attempting to force TFT into 'standby'." | tee -a /dev/tty8
- xset dpms force standby
- echo -en "\n\$(date +'%F | %T | ')'\$0' \$(xset q | grep "Monitor is")" | tee -a /dev/tty8
- done
- done
- while ! xset q | grep -q "Monitor is On" ; do
- echo -en "\n\$(date +'%F | %T | ')'\$0' Attempting to force TFT to 'on'." | tee -a /dev/tty8
- xset dpms force on
- echo -en "\n\$(date +'%F | %T | ')'\$0' \$(xset q | grep "Monitor is")" | tee -a /dev/tty8
- done
+ CURRENTRES=\$(xrandr | awk '$0 ~/\*/ { print \$1}') # determine current resolution
+ xrandr -s 640x480 # set low resolution to trigger TFT wakeup
+ xrandr -s \$CURRENTRES # restore original resolution
fi
# set screen background to X2Go default blue on all detected screens
--
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