Public bug reported:
Since months I turn the monitor, 2560x1440, that is connected via DP,
off when I leave work and turn it on when back next day and I always saw
my desktop again. After the reboot due to 2.6.38-13-generic installation
last week and then following reboot, I get no DisplayPort signal
anymore when the monitor is turned off and on again.
We can reproduce this bug on second 'identical' system Dell OptiPlex 780
with Intel GFX running natty + Monitor via DP.
Unsucessful tries:
* ALT-CTRL-F1 then ALT-CTRL-F7 did not help. Still no DP Signal.
* boot into rescue mode (so no X11). Still no DP signal when I turn the
monitor off/on.
* boot outdated 2.6.38-12-generic (normal and rescue) that showed no problem
before
and still no DP signal after monitor off/on.
Working (but very inconvenient) workarounds to get a DP signal again
after monitor off/on:
* remote login and xrandr --output DP1 --off; sleep 1; xrandr --output DP1
--auto
or
* connecting a second monitor via VGA, this also turns the DP signal back to
on.
(turn VGA monitor off/on is not enough. One has to unplug and connect VGA
again
to get the DP signal again)
Note: VGA signal is not affected. I can turn the VGA monitor off/on and VGA
Signal is always
there. Only DP receive no signal after off/on.
I see this bugs since reboot:
reboot system boot 2.6.38-13-generi Tue Jan 31 18:39 - 18:48
(00:09)
last reboot before this was
reboot system boot 2.6.38-13-generi Thu Jan 19 16:59 - 18:33
(12+01:34)
pkgs installed between this 2 reboots were:
drwxr-xr-x 2 root root 4096 2012-01-20 12:22 libxml2-dev
drwxr-xr-x 2 root root 4096 2012-01-20 12:22 libxml2-utils
drwxr-xr-x 2 root root 4096 2012-01-20 12:22 libxml2
drwxr-xr-x 2 root root 4096 2012-01-20 12:22 libt1-5
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-image-2.6.38-13-generic
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 rsyslog
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 libcurl3
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 curl
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 libcurl3-gnutls
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 libicu44
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-headers-2.6.38-13
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-headers-2.6.38-13-generic
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-tools-common
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-tools-2.6.38-13
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 linux-libc-dev
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 icedtea-6-jre-jamvm
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 icedtea-6-jre-cacao
drwxr-xr-x 2 root root 4096 2012-01-27 11:44 openjdk-6-jre-headless
drwxr-xr-x 3 root root 4096 2012-01-27 11:44 python-launchpadlib
drwxr-xr-x 2 root root 4096 2012-01-31 14:47 python-software-properties
drwxr-xr-x 2 root root 4096 2012-01-31 14:47 software-properties-kde
drwxr-xr-x 2 root root 4096 2012-02-06 10:53 x11-common <-- did a
downgrade to test , later an upgrade again
Achim
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-13-generic 2.6.38-13.54
ProcVersionSignature: Ubuntu 2.6.38-13.54-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic x86_64
NonfreeKernelModules: openafs
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ach 2579 F.... pulseaudio
/dev/snd/controlC1: ach 2579 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7adc000 irq 51'
Mixer name : 'Analog Devices AD1984A'
Components : 'HDA:11d4194a,10280420,00100400'
Controls : 35
Simple ctrls : 21
Card1.Amixer.info:
Card hw:1 'U0x46d0x9a6'/'USB Device 0x46d:0x9a6 at usb-0000:00:1a.7-3.3, high
speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:09a6'
Controls : 2
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 5120
Mono: Capture 2560 [50%] [21.00dB] [off]
Date: Mon Feb 6 12:21:46 2012
HibernationDevice: RESUME=UUID=679da31f-4d98-48c7-8966-40dc1842d3fa
InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Dell Inc. OptiPlex 780
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=en_GB.UTF-8
LC_MESSAGES=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-13-generic
root=UUID=7dc90c2a-90f5-45b3-bf5c-2a55326b97e1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-13-generic N/A
linux-backports-modules-2.6.38-13-generic N/A
linux-firmware 1.52
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-04-26 (285 days ago)
dmi.bios.date: 05/23/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0C27VV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA09:bd05/23/2011:svnDellInc.:pnOptiPlex780:pvr:rvnDellInc.:rn0C27VV:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 780
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug natty
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/927605
Title:
Regression: monitor DP signal not turned on when monitor is switched
on
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/927605/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
