[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]
** Changed in: xorg (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1580219
Title:
screen switches off
Status in xorg package in Ubuntu:
Expired
Bug description:
Hi,
My computer is an ASUS X751L with a Dell monitor connected through
VGA.
I've just upgraded to 16.04 "Xenial" and rebooted.
Now this external monitor often goes black when I mouse my mouse to
the native LVDS screen. I've still not been able to find the exact
conditions, but it seems to occur when I don't move the mouse for a
long time, then move it to the other screen. The screen goes black and
comes back quickly, as if I would have run "xset dpms force off".
Also, from time to time, the upper part of my LVDS screen just
"scrambles" (you know, like when the old cathodic TVs were
trembling...) for a few seconds when I click on some keys on the
keyboard (e.g. the CTL-ALT-ARROWS, which are associated to
"Desktop"/Tag switching in my AwesomeWM config)
For more info:
# Executing a few commands found on another page
(https://askubuntu.com/questions/28033/how-to-check-the-information-of-current-installed-video-drivers)
to provide more info:
$ lspci | grep VGA ; lsmod | grep "kms\|drm" ; find /dev -group video ; \
cat /proc/cmdline ; find /etc/modprobe.d/; cat /etc/modprobe.d/*kms* ; \
ls /etc/X11/xorg.conf ; glxinfo | grep -i "vendor\|rendering" ; \
grep LoadModule /var/log/Xorg.0.log
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated
Graphics (rev 09)
drm_kms_helper 139264 1 i915
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
drm 360448 5 i915,drm_kms_helper
/dev/video0
find: ‘/dev/vboxusb’: Permission denied
/dev/fb0
/dev/dri/card0
/dev/dri/renderD128
/dev/dri/controlD64
BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed
root=UUID=a3c0bf21-3b98-45f2-8f95-2abd53cef1e7 ro quiet splash vt.handoff=7
/etc/modprobe.d/
/etc/modprobe.d/blacklist-rare-network.conf
/etc/modprobe.d/blacklist-firewire.conf
/etc/modprobe.d/mlx4.conf
/etc/modprobe.d/fbdev-blacklist.conf
/etc/modprobe.d/iwlwifi.conf
/etc/modprobe.d/alsa-base.conf
/etc/modprobe.d/blacklist-ath_pci.conf
/etc/modprobe.d/vmwgfx-fbdev.conf
/etc/modprobe.d/intel-microcode-blacklist.conf
/etc/modprobe.d/blacklist.conf
/etc/modprobe.d/blacklist-framebuffer.conf
/etc/modprobe.d/blacklist-oss.conf
/etc/modprobe.d/dkms.conf
/etc/modprobe.d/blacklist-watchdog.conf
/etc/modprobe.d/blacklist-modem.conf
/etc/modprobe.d/qemu-system-x86.conf
# modprobe information used for DKMS modules
#
# This is a stub file, should be edited when needed,
# used by default by DKMS.
/bin/ls: cannot access '/etc/X11/xorg.conf': No such file or directory
direct rendering: Yes
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
Vendor: Intel Open Source Technology Center (0x8086)
OpenGL vendor string: Intel Open Source Technology Center
[ 33.140] (II) LoadModule: "glx"
[ 34.658] (II) LoadModule: "intel"
[ 34.831] (II) LoadModule: "modesetting"
[ 34.883] (II) LoadModule: "fbdev"
[ 34.916] (II) LoadModule: "vesa"
[ 34.989] (II) LoadModule: "fbdevhw"
[ 35.092] (II) LoadModule: "dri2"
[ 35.092] (II) LoadModule: "present"
[ 39.380] (II) LoadModule: "evdev"
[ 39.740] (II) LoadModule: "synaptics"
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