Same Problem seems to occur on my T480s with Thinkpad Ultra Docking
station and two external displays.
After booting and login, all displays work, but after executing:
# xrandr --output DP2-3 --rotate left
Display DP2-3 does not display anything any more, even though xrandr claims it
should:
#xrandr
Screen 0: minimum 320 x 200, current 5680 x 1920, maximum 8192 x 8192
[…]
DP2-3 connected 1200x1920+4480+0 left (normal left inverted right x axis y
axis) 518mm x 324mm
1920x1200 59.95*+
[…]
I'm running fully updated Ubuntu 18.10:
4.18.0-12-generic #13-Ubuntu SMP Wed Nov 14 15:17:05 UTC 2018 x86_64 x86_64
x86_64 GNU/Linux
** Attachment added: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5218810/+files/dmesg
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1727662
Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
FIFO underrun
Status in Linux:
Invalid
Status in linux package in Ubuntu:
Confirmed
Bug description:
What happens is after I dock my laptop into a Lenovo ThinkPad Ultra Dock Type
40A2 20V, lock it via clicking the lock icon, and wait ~30 minutes, one of the
following three things happen ~50% of the time when I come back to unlock it:
* Most of the time the computer is found shut down.
* Sometimes the notebook screen flickers weirdly and one of the two external
monitors show pixelation.
* The notebook screen shows the lock screen but is completely frozen.
Occasionally unlocking works.
I have two external monitors attached to the docking station.
When I dock my laptop, the battery indicator does recognize its
charging.
I've not seen this issue when:
1) With the laptop in the dock, while actively using the laptop.
2) With the laptop out of the dock and no external monitors present.
This bug started after upgrading from Ubtuntu 17.04 to Ubuntu 17.10.
Using or not using the following kernel parameter didn't change anything:
i915.enable_rc6=0
Updated docking station firmware to latest 2.33.00.
PC temperatures are normal as per lm-sensors.
20171109 - Not reproducible testing drm-tip for 1.5 days.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-16-lowlatency 4.13.0-16.19
ProcVersionSignature: Ubuntu 4.13.0-16.19-lowlatency 4.13.4
Uname: Linux 4.13.0-16-lowlatency x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: akops 3337 F.... pulseaudio
/dev/snd/controlC0: akops 3337 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 26 10:44:11 2017
HibernationDevice: RESUME=/dev/mapper/system-swap_1
MachineType: LENOVO 20BWS2YL00
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-lowlatency
root=/dev/mapper/system-root ro quiet splash i915.enable_rc6=0
crashkernel=384M-:128M vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.13.0-16-lowlatency N/A
linux-backports-modules-4.13.0-16-lowlatency N/A
linux-firmware 1.169
SourcePackage: linux
UpgradeStatus: Upgraded to artful on 2017-10-20 (5 days ago)
dmi.bios.date: 07/08/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET51WW (1.16 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BWS2YL00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET51WW(1.16):bd07/08/2015:svnLENOVO:pn20BWS2YL00:pvrThinkPadT450s:rvnLENOVO:rn20BWS2YL00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T450s
dmi.product.name: 20BWS2YL00
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/1727662/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
