This bug is fixed in Ubuntu 24.10
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https://bugs.launchpad.net/bugs/2073001
Title:
Regression: kernel bug upon keyboard disconnect
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Regression: kernel bug upon keyboard disconnect
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Hi @kmstoilov,
Thank you for your quick reply and testing. Please file another bug and
we'll work on it. Thanks.
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Title:
Regression: kernel bug
Can confirm the issue with going into 'tablet' mode after suspend/resume
is also present in the 6.5 series, so I will file a separate issue for
that.
The original kernel bug when disconnecting the keyboard dock is fixed
with the maintainer patch.
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Hi @rickywu,
The maintainer patch also works. I am attaching a dmesg log with several
connect/disconnect and suspend/resumes.
There seems to be a separate issue, I will probably file another bug for
that if you think it's more appropriate.
If you connect the dock, suspend and resume afterwards w
Hi @kmstoilov,
Thank you for testing. The upstream maintainer has a more general fix,
and I have built a test kernel on top of 6.10 and the maintainer's patch
(without my patch):
https://people.canonical.com/~rickywu/lp:2073001/maintainer_patch/
Could you please test this kernel? Thanks.
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Hi @rickywu,
I tried your kernel and it works. No errors in dmesg all I get is:
usb 1-4: USB disconnect, device number 3
s2idle works fine.
poweroff also works fine.
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** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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Title:
Regression: kernel bug upon keyboard disconnect
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** Tags added: regression-release
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Title:
Regression: kernel bug upon keyboard disconnect
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Hi @kmstoilov,
I have written a patch and built a kernel with the patch. Could you please try
this kernel?
Link: https://people.canonical.com/~rickywu/lp:2073001/
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Seems like intel_vbtn didn't recognize the switch in the initial setup
code. When switch disconnect event occurred, the code ran into the
following block:
if (!priv->has_switches) {
/* See dual_accel
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => En-Wei Wu (rickywu)
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Title:
Regression: kernel bug upon keyboard disconnect
To mana
From the log, looks like intel_vbtn driver treats the undock/disconnect
event as a switch event, and then starts to register input-dev again.
[ 83.861917] device_add+0xe0/0x740
[ 83.861919] input_register_device+0xe8/0x370
[ 83.861924] notify_handler+0x12e/0x1a0 [intel_vbtn]
We need to check bel
@AaronMa Sure
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Title:
Regression: kernel bug upon keyboard disconnect
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@En-Wei
Could you try check this issue too?
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Title:
Regression: kernel bug upon keyboard disconnect
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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Title:
Regression: kernel bug upon keyboard disconnect
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@kmstoilov
Could you try mainline build kernel version[1] to find out which is the first
version that introduced the regression?
Like first try v6.8, v6.9 and v6.10-rc4.
Thanks.
[1] https://kernel.ubuntu.com/mainline/
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