screen switches off
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Expired
|
Low
|
Unassigned |
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:/
$ lspci | grep VGA ; lsmod | grep "kms\|drm" ; find /dev -group video ; \
cat /proc/cmdline ; find /etc/modprobe.d/; cat /etc/modprobe.
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=
/etc/modprobe.d/
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
/etc/modprobe.
# 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/
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"
This behaviour is VERYYYYYY annoying... Nobody can confirm/solve it?????
Completing my own infos:
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
**00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)**
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:04.0 Signal processing controller: Intel Corporation Broadwell-U Camarillo Device (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03)
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5287 (rev 01)
02:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter