https://bugzilla.kernel.org/show_bug.cgi?id=209657
Bug ID: 209657
Summary: PnP unable to detect connected PS/2 mouse on Asus
F2A85-M PRO
Product: ACPI
Version: 2.5
Kernel Version: 5.9
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
Assignee: acpi_ot...@kernel-bugs.osdl.org
Reporter: pmenzel+bugzilla.kernel....@molgen.mpg.de
Regression: No
Created attachment 292943
--> https://bugzilla.kernel.org/attachment.cgi?id=292943&action=edit
Output of `acpidump`
Reference: https://lkml.org/lkml/2020/10/7/931
On the Asus F2A85-M PRO Linux 5.9-rc8 (and previous versions) does not
recognize a plugged in PS/2 mouse using the Plug & Play method. The PS/2
keyboard is detected fine, and using `i8042.nopnp`, the PS/2 mouse also
works.
> [ 1.035915] calling i8042_init+0x0/0x42d @ 1
> [ 1.035947] i8042: PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
> [ 1.035948] i8042: PNP: PS/2 appears to have AUX port disabled, if this is
> incorrect please boot with i8042.nopnp
> [ 1.036589] serio: i8042 KBD port at 0x60,0x64 irq 1
> [ 1.036621] initcall i8042_init+0x0/0x42d returned 0 after 687 usecs
Dmitry’s answer was:
> My guess is that _STA returns 0 indicating that the device is not
> present. I would try tracking where IOST is being set and figuring out
> why it does not have mouse bit enabled
Unfortunately, I do not know how, so I attach the output of `acpidump`.
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