I'm already on linux-oem-5.6-headers-5.6.0-1036 with the issue still
present. I recently upgraded to a Dell Ultrasharp 38" instead of my
double configuration, and the same issue occurs with USB-C connection in
this configuration.
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It looks like 5.6.0-1037.41 is on the PPA, is it worth trying that?
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Title:
Thunderbolt Dock Loses Monitors
Status in linux package
Another thing to note, when I get flickering monitor loss unplugging and
plugging in the dock seems to resolve. Same thing going on in the logs then:
[221027.376079] [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
[221027.387002] [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A
[2210
Installed, give me some time to do some tests and see if the issue is
fixed.
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Title:
Thunderbolt Dock Loses Monitors
Status in linu
The issue is still occurring.
Configuration - Laptop docked with screen closed, dual monitor on dock.
Linux unicron 5.6.0-1028-oem #28-Ubuntu SMP Tue Sep 8 13:34:39 UTC 2020 x86_64
x86_64 x86_64 GNU/Linux
I can reproduce it by doing the following:
1. Hit win+l to lock
2. Let monitors go to sleep
** Attachment added: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+attachment/5414835/+files/dmesg
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Title:
Public bug reported:
After a suspend or locking the only way to regain external monitors is
to unplug and replug the thunderbolt dock back in.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Una
Some additional details: I'm using a Dell WD19TB dock.
The lock screen seems to be the tipping point, with that disabled I'm
able to continually use external monitors. If I hit win+l to lock then I
have to unplug the dock in order to get external monitors working again.
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** Attachment added: "kernel_dump.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+attachment/5420275/+files/kernel_dump.txt
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Took me a bit to reproduce again while logging:
1. Hit win+l to lock
2. Let monitors go to sleep (the longer the better, if I did this for a short
amount of time the system recovered)
3. Try to wake up with keyboard/mouse
4. Unlock screen is not prompted
5. Open laptop, find unlock screen there
6.
I'll also note that at one point in this log the dock lost my keyboard,
which needed to be unplugged and plugged back in.
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Title:
Th
** Attachment added: "current_firmware.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+attachment/5421352/+files/current_firmware.txt
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See attachment, everything is up to date according to fwupdmgr.
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Title:
Thunderbolt Dock Loses Monitors
Status in linux package in
Happened out of the box from Dell, switching to 5.6 OEM didn't help. I
think part of the key here is the double monitor in the dock with the
laptop screen closed.
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It definitely occurs with a fresh install (dell image). I received my
laptop and dock together, happened right out of the box.
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Title
>From the Dell thread mentioned above, adding this to grub helps:
"mem_sleep_default=deep i915.enable_guc=2 i915.enable_dp_mst=0"
I'll test out the new kernel and get you feedback.
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Is there a signed version of 5.10 oem available anywhere? I see
5.10.0-1008-oem available in Ubuntu sources, but the version you asked
for testing is 5.10.0-4008-oem.
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See kernel log with the 5.10.0-4008-oem kernel. Didn't work with either
USB-C port.
** Attachment added: "kern.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889342/+attachment/5451633/+files/kern.log
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I upgraded my kernel to 5.6.0-1020-oem in order to test. The issue is
better then, but not resolved. When using the lock screen one out of
the two monitors is lost.
This errors are in dmesg:
[257474.965612] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to get link status
[25
Back on 5.4.0-42-generic
I get random cut outs with this in dmesg:
[60008.139725] xhci_hcd :03:00.0: xHCI host controller not responding,
assume dead
[60008.158394] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to get link status
Eventually the displays come back after a
I have two monitors connected 1080p 60hz. I have tried with either HTMI
or DP, issue is present no matter the combination. I'll also note that
I lose my sound settings quite often and need to switch that back to
HDMI after any hiccups.
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Can you double check that URL? Doesn't seem to be working.
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Title:
Thunderbolt Dock Loses Monitors
Status in linux package in Ubun
5.10.0-1011kgen9tgps3rsm-oem does not help. The system doesn't detect
the TB dock at all on one USB-C port. The other leads to the laptop
screen constantly turning off and on, and no connection to the TB
dock/monitor occuring.
Same results with 5.10.0-1016 in Feisty Fixes.
I see in the Dell for
https://www.dell.com/community/XPS/XPS-13-9300-and-WD19TB-linux-
problem/td-p/7644488/highlight/true/page/13
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Title:
Thunderbolt Doc
I'll also note I'm problem free for a few days on 5.10.24-051024-generic
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Title:
Thunderbolt Dock Loses Monitors
Status in linux pa
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