[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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Hi,
thanks for trying this out.
If this is still reproducible, please give the latest mainline kernel [1] a try
to see if you issue exists in the upstream kernel. Instructions could be found
in [2]
Please flip the bug status back to confirmed after your test.
Thank you!
[1] https://kernel.ubunt
4th try: Works, but
[350616.380035] [drm:drm_dp_check_act_status [drm_kms_helper]] *ERROR* Failed
to get ACT after 3000ms, last status: 00
[350619.421657] [drm:drm_dp_check_act_status [drm_kms_helper]] *ERROR* Failed
to get ACT after 3000ms, last status: 00
So something seems to be still flacky
Sorry, didn't see the request :-/
I just tried with 5.8 from HWE. After my frist reconnect, I got a
[350240.293152] failed hdr00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00
(nothing else!) in dmesg, nothing about the external monitors in xrandr.
At the second try (no restart), they work again.
Marked as Incomplete as per request in comment #23
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Title:
Ker
Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6/
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Title:
Kernel BUG sometimes during pluging
apport information
** Tags added: apport-collected focal
** Description changed:
Sometimes, during plugging in a DP -> 2x HDMI splitter, I get a kernel
BUG with a NULL pointer dereference. Most times it works, through.
I'm using Ubuntu 20.04
I've a 1920x1200 (eDP) display in my lap
** Attachment added: "uname-a.log"
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/1870786/+attachment/5346321/+files/uname-a.log
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** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/1870786/+attachment/5346322/+files/version.log
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** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/1870786/+attachment/5346320/+files/lspci-vnvn.log
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