apport information
** Tags added: apport-collected saucy
** Description changed:
I have a Lenovo X1 Carbon with an external screen connected to a Mini DP to
VGA adapter. External screen works fine until the display goes to sleep for
inactivity (just the display goes to sleep, not the laptop).
When I return to the laptop, the built in screen wakes but the external
screen does not. The screen is still detected, xrandr displays the resolution
and I can move the cursor to the external display but the display remains off.
I have tried cycling with Fn+F7 and also tried Ctrl+Alt+F1 then Ctrl+Alt+F7.
The only way to get the external display back on is by disconnecting the
adapter from the laptops DP port and reconnecting.
dmesg produces:
drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting
Running
Description: Ubuntu 13.04
Release: 13.04
kernel 3.8.0-23-generic
xserver-xorg-video-intel:
Installed: 2:2.21.6-0ubuntu4
As a workaround I have disabled the monitor from sleeping in System
Settings->Brightness & Lock-> Turn Screen off when inactive for
+ ---
+ ApportVersion: 2.12.5-0ubuntu2.2
+ Architecture: amd64
+ AudioDevicesInUse:
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: omri 2408 F.... pulseaudio
+ omri 8582 F.... TeamViewer.exe
+ /dev/snd/pcmC0D0p: omri 2408 F...m pulseaudio
+ DistroRelease: Ubuntu 13.10
+ HibernationDevice: RESUME=UUID=d46a5b01-0285-4289-8345-692997c83409
+ InstallationDate: Installed on 2013-10-19 (80 days ago)
+ InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
+ MachineType: LENOVO 3443CTO
+ MarkForUpload: True
+ Package: linux (not installed)
+ ProcFB: 0 inteldrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
+ ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
+ RelatedPackageVersions:
+ linux-restricted-modules-3.11.0-15-generic N/A
+ linux-backports-modules-3.11.0-15-generic N/A
+ linux-firmware 1.116
+ Tags: saucy
+ Uname: Linux 3.11.0-15-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm bluetooth cdrom dip lpadmin plugdev sambashare sudo
+ dmi.bios.date: 04/29/2013
+ dmi.bios.vendor: LENOVO
+ dmi.bios.version: G6ET96WW (2.56 )
+ dmi.board.asset.tag: Not Available
+ dmi.board.name: 3443CTO
+ dmi.board.vendor: LENOVO
+ dmi.board.version: Win8 Pro DPK TPG
+ dmi.chassis.asset.tag: No Asset Information
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: LENOVO
+ dmi.chassis.version: Not Available
+ dmi.modalias:
dmi:bvnLENOVO:bvrG6ET96WW(2.56):bd04/29/2013:svnLENOVO:pn3443CTO:pvrThinkPadX1Carbon:rvnLENOVO:rn3443CTO:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
+ dmi.product.name: 3443CTO
+ dmi.product.version: ThinkPad X1 Carbon
+ dmi.sys.vendor: LENOVO
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1189639/+attachment/3942771/+files/AlsaInfo.txt
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https://bugs.launchpad.net/bugs/1189639
Title:
[dp] External Screen doesn't wake up from sleep
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