** Changed in: linux
Status: Confirmed => Fix Released
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking
Hello! I think i got the same issue.
Using a Thinkpad T440 with a Dockingstation (Ultra Dock) using two external
Monitors.
The attached kernel.log contains all infos from the time i unlocked my laptop
until i turned it off because it is completly frozen.
I cannot reproduce it, but it occures
Alexander Kops, to keep this relevant to upstream, one would want to
periodically check for, and test the latest mainline kernel (now
5.4-rc3) as it is released, to confirm if the drm-tip improvements have
been made available for inclusion into Ubuntu.
Could you please advise?
** This bug is no
*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
Same problem on Dell Lattitude 5591 with K17A USB C Dock. Laptop crashed
after screen lock.
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*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
** Tags added: cscc
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Title:
[Lenovo
*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
** This bug has been marked a duplicate of bug 1550779
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
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** Changed in: linux
Importance: High => Medium
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
** Changed in: linux
Status: Incomplete => Confirmed
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
** Changed in: linux
Status: Confirmed => Incomplete
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
Launchpad has imported 20 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=103643.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
** Tags removed: latest-bios-1.30
** Tags added: bios-outdated-1.35
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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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:
Hi, I would like to confirm this as this also affects not only my client
but also my Colleagues (thinkpad T460s and T470s). The Problem seem to
occur after a few minutes of inactiviy randomly. Some experience this
3-4 times/day while some 2-5 times a week.
Running on Ubuntu Bionic 18.04
Kernel
** Changed in: linux (Ubuntu)
Status: Triaged => Confirmed
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
Sounds like the Dock is losing its network connection (I'm assuming its wired
to the NIC on the dock)
When this issue occurs again, remove the network cable from the dock and try
logging in. If it lets you in - The dock may be in some sort of power save
mode stopping network connectivity.
for
** Changed in: linux
Status: Incomplete => Invalid
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Title:
[Lenovo ThinkPad T450s] Issues after docking and locking:
Here is my syslog
** Attachment added: "syslog"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110429/+files/syslog
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I am also observing this issue on a Thinkpad T470s using a Thinkpad
Ultra Type 40A2 dock.
** Attachment added: "kern.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5110416/+files/kern.log
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I primarily observe this issue when manually turning on my monitor after
unlock, after it fails to autowake. The problem appears to occur at Apr
11 09:08:41 in the attached kern.log.
Running on Ubuntu 16.04
/proc/version:
Linux version 4.13.0-36-generic (buildd@lgw01-amd64-033) (gcc version
Christopher, I am trying to provide debugging information for myself and
the Ubuntu developers. I have NOT asked anybody to perform a root cause
analysis, debug my problem, or perform any video review. I have only
asked if the observed behavior in the bug in this thread is similar to
the one I am
lanrat, Launchpad is a development platform, for Ubuntu users to provide
debugging information of problems for developers to review, and fix.
Asking folks to review a video without providing debugging information
is unhelpful here.
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Christopher, I apologize if I am miscommunicating.
All I am asking is if what you are observing is similar to the video I
posted, nothing more.
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lanrat, nobody can root cause your issue simply by reviewing a video.
However, posting a report allows developers to review debugging logs for
root causing.
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Christopher, the purpose of my question was because, after some
research, I do not think that this is a device specific issue, and is
actually the result of the kernel and graphics card. Hence why I posted
the video to see if you are all seeing the same issue or if it is
unrelated.
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lanrat, in order to address your issue, it will help immensely if you use the
computer the problem is reproducible with, and file a new report with Ubuntu
via a terminal:
ubuntu-bug linux
Please feel free to subscribe me to it.
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I think I am having the same issue on my DELL XPS 13 with intel graphics
(no dock).
Is this what you are all seeing?
https://www.youtube.com/watch?v=2g2GRca3nik
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As reported upstream, when I used the drm-tip kernel I didn't see the FIFO
error message in the logs again (but still had random power downs).
I'm running the mainline kernel 4.15.0-041500rc8-generic and also don't see any
of the described issues anymore (although I still have 1-2 random
Hi Alexander. Thanks for your bug report and all your effort to troubleshoot
and fix this weird issue.
I'm not using any docking station but I'm experiencing the same behaviour
(screen flickering and unable to lock my screen) here on a Lenovo T450s with a
Intel HD Graphics 5500 (Broadwell GT2)
** Description changed:
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
** Changed in: linux
Status: Unknown => Incomplete
** Changed in: linux
Importance: Unknown => High
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Title:
[Lenovo
** Also affects: linux via
https://bugs.freedesktop.org/show_bug.cgi?id=103643
Importance: Unknown
Status: Unknown
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So I was just able to reproduce the shut-down issue with the kernel
4.14.0-041400rc8-generic and the debugging flags enabled.
I submitted a kern.log to the upstream bug report.
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Alexander Kops:
"2) I know, I'm trying to reproduce the issue with "drm.debug=0x1e
log_buf_len=1M" added right now, and will add the information later"
If it's not reproducible in drm-tip, if reproducible in mainline then
one could take this debug log from there. This will given them a hint on
1) Currently trying to reproduce
2) I know, I'm trying to reproduce the issue with "drm.debug=0x1e
log_buf_len=1M" added right now, and will add the information later
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Alexander Kops, couple of issues:
1) To clarify, after the firmware update, is the issue still reproducible with
latest mainline?
2) Your upstream post is missing all the information requested by Intel as
documented in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/comments/30 .
Some updates:
* I cross posted the issue to the freedesktop bugtracker here:
https://bugs.freedesktop.org/show_bug.cgi?id=103643
* I got my docking station firmware updated, it is now at 2.33.00.
Unfortunately I was not able to determine what the previous version was
* I'm running with the
Alexander Kops, to advise, if you can't reproduce in drm-tip, still
report it as per their instructions as it's reproducible in mainline
(i.e. upstream issue).
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Ok, I'll install the drm-tip kernel from http://kernel.ubuntu.com
/~kernel-ppa/mainline/drm-tip/current/ , try to reproduce it there, and
report it to Intel.
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** Description changed:
- What happens is after I dock my laptop, 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:
+ What happens is after I dock my laptop into a Lenovo ThinkPad Ultra Dock Type
Alexander Kops:
>"1) It's a lenovo ThinkPad Ultra Dock Type 40A2 20V I didn't know docking
>stations had firmwares up until now. Is there a way to find out via Ubuntu?
>Otherwise I have to talk to my company helpdesk about it."
While I'm not sure how to check via Ubuntu, the path of least
** Summary changed:
- Crashes after unlock: [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
+ [Lenovo ThinkPad T450s] Issues after docking and locking:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
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