https://bugzilla.kernel.org/show_bug.cgi?id=222038
Bug ID: 222038
Summary: Dell Pro Max Keyboard key up delay
Product: ACPI
Version: 2.5
Hardware: AMD
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: BIOS
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 310883
--> https://bugzilla.kernel.org/attachment.cgi?id=310883&action=edit
logs during problematic behavior
I am a CompE student at Rose-Hulman, they have us all on these Dell Pro Max
laptops. (AMD Ryzen 7 Pro)
Something goes horribly wrong intermittently and the EC drops the i8042 key-up
interrupts, causing randomly delayed and repeating keys that lock us out of
everything given it becomes impossible to enter sudo password correctly. The
issue requires a hard EC reset.
We attempted i8042.reset=1, and the issue persisted. We also tried
i8042.kbdreset=1 and it did not fix the issue.
The problem is intermittent, effecting users very roughly once every 3 days of
normal schoolwork, but currently I am testing out acpi_osi=! acpi_osi="Windows
2020" and it seems to be preventing the issue so far.
I tried to contact Dell support and basically was told "We ship that computer
with Windows, you should use Windows" so no suprise the random Dell person was
no help.
~
❯ sudo dmidecode -t 1
[sudo] password for michael:
# dmidecode 3.7
Getting SMBIOS data from sysfs.
SMBIOS 3.8.0 present.
Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: Dell Pro Max 16 MC16255
Version: Not Specified
Serial Number: CDLZFK4
UUID: 4c4c4544-0044-4c10-805a-c3c04f464b34
Wake-up Type: Power Switch
SKU Number: 0D83
Family: Dell Pro Max Laptops
~ took 3s
❯
I don't think I see anything useful in the logs but Im attaching
`previous_dmesg.txt` which was the boot when the issue was happening and I
couldn't type anything without it spamming repeats everywhere. evtest showed it
was just getting a 600-1000ms delay between key down and key up signals on an
instantaneous key press.
I appreciate any help with this, hopefully I'll get to the point where I could
open a PR to fix a kernel bug like this soon enough.
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