[Lenovo ThinkPad T440p][10de:1290] hot key "video out" could not work under graphic performance mode.

[Taihsiang Ho]

Lenovo ThinkPad T440p ( CID 201309-14169 ) on Ubuntu 14.04
3.13.0-24-generic

-----------------------------------

Steps to reproduce this bug:
1. install proprietary dirver nvidia-331 to enable the nvidia graphic card [10de:1290]
2. reboot
3. plugin mini display port of a monitor
4. press the hot key to try to switch to different display mode.

Expected result:
The display mode was changed.

Actual result:
Nothing happened.

-----------------------------------

More information:
1. on power-saving mode, the hot key works
2. there are two kinds of port, VGA and mini-display port. Both of them have this issue.
3. dash->display could set up the external monitor screen on mini-display and VGA port both. (mirror, extended, built-in screen only and external screen only)

-----------------------------------

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 1716 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 1716 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Sep 3 03:34:38 2014
HibernationDevice: RESUME=UUID=b437ec5c-4a11-4108-a4b7-900f2ea9f312
InstallationDate: Installed on 2014-08-27 (6 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20ANZ03CUS
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=cb520008-8859-45fa-b8dd-d66a667b1be2 ro rootdelay=60 quiet splash initcall_debug
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-24-generic N/A
 linux-backports-modules-3.13.0-24-generic N/A
 linux-firmware 1.127
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/20/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: GLET34WW (1.09.T05 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20ANZ03CUS
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGLET34WW(1.09.T05):bd08/20/2013:svnLENOVO:pn20ANZ03CUS:pvrThinkPadT440p:rvnLENOVO:rn20ANZ03CUS:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20ANZ03CUS
dmi.product.version: ThinkPad T440p
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Taihsiang Ho, thank you for reporting this and helping make Ubuntu better.

As per http://download.lenovo.com/express/ddfm.html an update to your BIOS is available (2.25). If you update to this following https://help.ubuntu.com/community/BiosUpdate does it change anything? If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

[Ara Pulido (ara)]

Marking as confirmed to avoid expiring this bug. Right now we cannot test with an updated BIOS version.

[Anthony Wong (anthonywong)]

@Taihsiang
Can you do a system update and test again? There is a fix in ubuntu-drivers-common 0.2.91.7 which should have fixed this bug.

[Taihsiang Ho (tai271828)]

201309-14169
3.13.0-24-generic
ubuntu-drivers-common 0.2.91.7

still has this issue.
Please see the attahcment 201309-14169-lp1364805-comment6.tar.gz
for more details.

[Taihsiang Ho (tai271828)]

In comment #6, I also noted the desktop rendering is slower under the performance mode (nvidia) than power-saving mode (intel)
Take for example:
1. switch to performance/power-saving mode by the command, prime-select nvidia/intel
2. open the terminal. try to type some words
3. when typing in the words, you could tell the response is different between two modes.

[Taihsiang Ho (tai271828)]

201309-14169
3.13.0-39-generic and updated system
ubuntu-drivers-common 1:0.2.91.7

still has this issue.

Please see the attachment
201309-14169-lp1364805-comment08.tar.gz
for more details.

----
Even more, the external monitor via mini-DP port will show incorrect desktop rendering,
but the screen shot looks ok.

Please refer to the photos in 201309-14169-lp1364805-comment08.tar.gz

[Anthony Wong (anthonywong)]

@Taihsiang
Could you please get an nvidia-bug-report.log file with nvidia-bug-report.sh? Preferably with verbose mode validation logging enabled (run `nvidia-xconfig --mode-debug` before starting X).

[Taihsiang Ho (tai271828)]

The attachment contains the log suggested by the 9th comment.
There are logs collected in non-verbose and verbose mode separately and their associated xorg.conf