* i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS
@ 2020-10-07 21:18 Paul Menzel
2020-10-07 22:16 ` Dmitry Torokhov
0 siblings, 1 reply; 8+ messages in thread
From: Paul Menzel @ 2020-10-07 21:18 UTC (permalink / raw)
To: Dmitry Torokhov; +Cc: linux-input, LKML
Dear Linux folks,
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
But, the DSDT includes the “mouse device”. From
acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl
we get
Device (PS2M)
{
Name (_HID, EisaId ("PNP0F03") /* Microsoft
PS/2-style Mouse */) // _HID: Hardware ID
Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */)
// _CID: Compatible ID
Method (_STA, 0, NotSerialized) // _STA: Status
{
If ((IOST & 0x4000))
{
Return (0x0F)
}
Else
{
Return (Zero)
}
}
and the identifiers PNP0F03 and PNP0F13 are both listed in the array
`pnp_aux_devids[]`. But adding print statements to
`i8042_pnp_aux_probe()`, I do not see them, so the function does not
seem to be called.
Hints for further debugging are much appreciated.
Kind regards,
Paul
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-07 21:18 i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS Paul Menzel @ 2020-10-07 22:16 ` Dmitry Torokhov 2020-10-10 20:32 ` Paul Menzel 0 siblings, 1 reply; 8+ messages in thread From: Dmitry Torokhov @ 2020-10-07 22:16 UTC (permalink / raw) To: Paul Menzel; +Cc: linux-input, LKML Hi Paul, On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: > Dear Linux folks, > > > 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 > > But, the DSDT includes the “mouse device”. From > > acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl > > we get > > Device (PS2M) > { > Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style > Mouse */) // _HID: Hardware ID > Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // > _CID: Compatible ID > Method (_STA, 0, NotSerialized) // _STA: Status > { > If ((IOST & 0x4000)) > { > Return (0x0F) > } > Else > { > Return (Zero) > } > } > > and the identifiers PNP0F03 and PNP0F13 are both listed in the array > `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, > I do not see them, so the function does not seem to be called. 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. Thanks. -- Dmitry ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-07 22:16 ` Dmitry Torokhov @ 2020-10-10 20:32 ` Paul Menzel 2020-10-12 10:39 ` Rafael J. Wysocki 0 siblings, 1 reply; 8+ messages in thread From: Paul Menzel @ 2020-10-10 20:32 UTC (permalink / raw) To: Dmitry Torokhov, Rafael J. Wysocki, Len Brown Cc: linux-input, LKML, linux-acpi, Hans de Goede Dear Dmitry, dear Rafael, dear Len, Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: > On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: >> 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 >> >> But, the DSDT includes the “mouse device”. From >> >> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl >> >> we get >> >> Device (PS2M) >> { >> Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style Mouse */) // _HID: Hardware ID >> Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // _CID: Compatible ID >> Method (_STA, 0, NotSerialized) // _STA: Status >> { >> If ((IOST & 0x4000)) >> { >> Return (0x0F) >> } >> Else >> { >> Return (Zero) >> } >> } >> >> and the identifiers PNP0F03 and PNP0F13 are both listed in the array >> `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, >> I do not see them, so the function does not seem to be called. > > 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. Does the ACPI subsystem allow to track, how ACPI variables(?) like IOST are read and set? Kind regards, Paul ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-10 20:32 ` Paul Menzel @ 2020-10-12 10:39 ` Rafael J. Wysocki 2020-10-12 10:50 ` Paul Menzel 0 siblings, 1 reply; 8+ messages in thread From: Rafael J. Wysocki @ 2020-10-12 10:39 UTC (permalink / raw) To: Paul Menzel Cc: Dmitry Torokhov, Rafael J. Wysocki, Len Brown, linux-input, LKML, ACPI Devel Maling List, Hans de Goede On Sun, Oct 11, 2020 at 1:08 AM Paul Menzel <pmenzel@molgen.mpg.de> wrote: > > Dear Dmitry, dear Rafael, dear Len, > > > Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: > > > On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: > > >> 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 > >> > >> But, the DSDT includes the “mouse device”. From > >> > >> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl > >> > >> we get > >> > >> Device (PS2M) > >> { > >> Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style Mouse */) // _HID: Hardware ID > >> Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // _CID: Compatible ID > >> Method (_STA, 0, NotSerialized) // _STA: Status > >> { > >> If ((IOST & 0x4000)) > >> { > >> Return (0x0F) > >> } > >> Else > >> { > >> Return (Zero) > >> } > >> } > >> > >> and the identifiers PNP0F03 and PNP0F13 are both listed in the array > >> `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, > >> I do not see them, so the function does not seem to be called. > > > > 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. > > Does the ACPI subsystem allow to track, how ACPI variables(?) like IOST > are read and set? My guess would be that IOST is a field in an operation region which would indicate that it is initialized by the bootstrap part of the BIOS. ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-12 10:39 ` Rafael J. Wysocki @ 2020-10-12 10:50 ` Paul Menzel 2020-10-12 11:00 ` Rafael J. Wysocki 0 siblings, 1 reply; 8+ messages in thread From: Paul Menzel @ 2020-10-12 10:50 UTC (permalink / raw) To: Rafael J. Wysocki Cc: Dmitry Torokhov, Rafael J. Wysocki, Len Brown, linux-input, LKML, ACPI Devel Maling List, Hans de Goede Dear Rafael, Am 12.10.20 um 12:39 schrieb Rafael J. Wysocki: > On Sun, Oct 11, 2020 at 1:08 AM Paul Menzel <pmenzel@molgen.mpg.de> wrote: >> >> Dear Dmitry, dear Rafael, dear Len, >> >> >> Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: >> >>> On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: >> >>>> 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 >>>> >>>> But, the DSDT includes the “mouse device”. From >>>> >>>> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl >>>> >>>> we get >>>> >>>> Device (PS2M) >>>> { >>>> Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style Mouse */) // _HID: Hardware ID >>>> Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // _CID: Compatible ID >>>> Method (_STA, 0, NotSerialized) // _STA: Status >>>> { >>>> If ((IOST & 0x4000)) >>>> { >>>> Return (0x0F) >>>> } >>>> Else >>>> { >>>> Return (Zero) >>>> } >>>> } >>>> >>>> and the identifiers PNP0F03 and PNP0F13 are both listed in the array >>>> `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, >>>> I do not see them, so the function does not seem to be called. >>> >>> 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. >> >> Does the ACPI subsystem allow to track, how ACPI variables(?) like IOST >> are read and set? > > My guess would be that IOST is a field in an operation region which > would indicate that it is initialized by the bootstrap part of the > BIOS. Thank you for your answer. But how can I verify that? Is there a Linux kernel parameter, that would print it? Kind regards, Paul ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-12 10:50 ` Paul Menzel @ 2020-10-12 11:00 ` Rafael J. Wysocki 2020-10-13 15:00 ` Paul Menzel 0 siblings, 1 reply; 8+ messages in thread From: Rafael J. Wysocki @ 2020-10-12 11:00 UTC (permalink / raw) To: Paul Menzel Cc: Rafael J. Wysocki, Dmitry Torokhov, Rafael J. Wysocki, Len Brown, linux-input, LKML, ACPI Devel Maling List, Hans de Goede On Mon, Oct 12, 2020 at 12:50 PM Paul Menzel <pmenzel@molgen.mpg.de> wrote: > > Dear Rafael, > > > Am 12.10.20 um 12:39 schrieb Rafael J. Wysocki: > > On Sun, Oct 11, 2020 at 1:08 AM Paul Menzel <pmenzel@molgen.mpg.de> wrote: > >> > >> Dear Dmitry, dear Rafael, dear Len, > >> > >> > >> Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: > >> > >>> On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: > >> > >>>> 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 > >>>> > >>>> But, the DSDT includes the “mouse device”. From > >>>> > >>>> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl > >>>> > >>>> we get > >>>> > >>>> Device (PS2M) > >>>> { > >>>> Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style Mouse */) // _HID: Hardware ID > >>>> Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // _CID: Compatible ID > >>>> Method (_STA, 0, NotSerialized) // _STA: Status > >>>> { > >>>> If ((IOST & 0x4000)) > >>>> { > >>>> Return (0x0F) > >>>> } > >>>> Else > >>>> { > >>>> Return (Zero) > >>>> } > >>>> } > >>>> > >>>> and the identifiers PNP0F03 and PNP0F13 are both listed in the array > >>>> `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, > >>>> I do not see them, so the function does not seem to be called. > >>> > >>> 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. > >> > >> Does the ACPI subsystem allow to track, how ACPI variables(?) like IOST > >> are read and set? > > > > My guess would be that IOST is a field in an operation region which > > would indicate that it is initialized by the bootstrap part of the > > BIOS. > > Thank you for your answer. But how can I verify that? Inspecting the ACPI tables from the system in question could help you to find out whether or not IOST really is a field in an operation region, but its initial value may not be possible to determine this way. > Is there a Linux kernel parameter, that would print it? Not that I know of. ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-12 11:00 ` Rafael J. Wysocki @ 2020-10-13 15:00 ` Paul Menzel 2020-10-13 15:17 ` Rafael J. Wysocki 0 siblings, 1 reply; 8+ messages in thread From: Paul Menzel @ 2020-10-13 15:00 UTC (permalink / raw) To: Rafael J. Wysocki Cc: Dmitry Torokhov, Rafael J. Wysocki, Len Brown, linux-input, LKML, ACPI Devel Maling List, Hans de Goede Dear Rafael, dear Dmitry, Am 12.10.20 um 13:00 schrieb Rafael J. Wysocki: > On Mon, Oct 12, 2020 at 12:50 PM Paul Menzel wrote: >> Am 12.10.20 um 12:39 schrieb Rafael J. Wysocki: >>> On Sun, Oct 11, 2020 at 1:08 AM Paul Menzel wrote: >>>> Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: >>>> >>>>> On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: >>>> >>>>>> 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 >>>>>> >>>>>> But, the DSDT includes the “mouse device”. From >>>>>> >>>>>> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; more dsdt.dsl >>>>>> >>>>>> we get >>>>>> >>>>>> Device (PS2M) >>>>>> { >>>>>> Name (_HID, EisaId ("PNP0F03") /* Microsoft PS/2-style Mouse */) // _HID: Hardware ID >>>>>> Name (_CID, EisaId ("PNP0F13") /* PS/2 Mouse */) // _CID: Compatible ID >>>>>> Method (_STA, 0, NotSerialized) // _STA: Status >>>>>> { >>>>>> If ((IOST & 0x4000)) >>>>>> { >>>>>> Return (0x0F) >>>>>> } >>>>>> Else >>>>>> { >>>>>> Return (Zero) >>>>>> } >>>>>> } >>>>>> >>>>>> and the identifiers PNP0F03 and PNP0F13 are both listed in the array >>>>>> `pnp_aux_devids[]`. But adding print statements to `i8042_pnp_aux_probe()`, >>>>>> I do not see them, so the function does not seem to be called. >>>>> >>>>> 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. >>>> >>>> Does the ACPI subsystem allow to track, how ACPI variables(?) like IOST >>>> are read and set? >>> >>> My guess would be that IOST is a field in an operation region which >>> would indicate that it is initialized by the bootstrap part of the >>> BIOS. >> >> Thank you for your answer. But how can I verify that? > > Inspecting the ACPI tables from the system in question could help you > to find out whether or not IOST really is a field in an operation > region, but its initial value may not be possible to determine this > way. > >> Is there a Linux kernel parameter, that would print it? > > Not that I know of. I created an issue in the Linux kernel bugtracker [1] and attached the output of `acpidump` there. Could If ((IOST & 0x4000)) versus If ((IOST & 0x0400)) be a typo? Kind regards, Paul [1]: https://bugzilla.kernel.org/show_bug.cgi?id=209657 ^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS 2020-10-13 15:00 ` Paul Menzel @ 2020-10-13 15:17 ` Rafael J. Wysocki 0 siblings, 0 replies; 8+ messages in thread From: Rafael J. Wysocki @ 2020-10-13 15:17 UTC (permalink / raw) To: Paul Menzel, Rafael J. Wysocki Cc: Dmitry Torokhov, Len Brown, linux-input, LKML, ACPI Devel Maling List, Hans de Goede On 10/13/2020 5:00 PM, Paul Menzel wrote: > Dear Rafael, dear Dmitry, > > > Am 12.10.20 um 13:00 schrieb Rafael J. Wysocki: >> On Mon, Oct 12, 2020 at 12:50 PM Paul Menzel wrote: > >>> Am 12.10.20 um 12:39 schrieb Rafael J. Wysocki: >>>> On Sun, Oct 11, 2020 at 1:08 AM Paul Menzel wrote: > >>>>> Am 08.10.20 um 00:16 schrieb Dmitry Torokhov: >>>>> >>>>>> On Wed, Oct 07, 2020 at 11:18:41PM +0200, Paul Menzel wrote: >>>>> >>>>>>> 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 >>>>>>> >>>>>>> But, the DSDT includes the “mouse device”. From >>>>>>> >>>>>>> acpidump > dump.bin; acpixtract dump.bin; iasl -d *dat; >>>>>>> more dsdt.dsl >>>>>>> >>>>>>> we get >>>>>>> >>>>>>> Device (PS2M) >>>>>>> { >>>>>>> Name (_HID, EisaId ("PNP0F03") /* >>>>>>> Microsoft PS/2-style Mouse */) // _HID: Hardware ID >>>>>>> Name (_CID, EisaId ("PNP0F13") /* PS/2 >>>>>>> Mouse */) // _CID: Compatible ID >>>>>>> Method (_STA, 0, NotSerialized) // _STA: >>>>>>> Status >>>>>>> { >>>>>>> If ((IOST & 0x4000)) >>>>>>> { >>>>>>> Return (0x0F) >>>>>>> } >>>>>>> Else >>>>>>> { >>>>>>> Return (Zero) >>>>>>> } >>>>>>> } >>>>>>> >>>>>>> and the identifiers PNP0F03 and PNP0F13 are both listed in the >>>>>>> array >>>>>>> `pnp_aux_devids[]`. But adding print statements to >>>>>>> `i8042_pnp_aux_probe()`, >>>>>>> I do not see them, so the function does not seem to be called. >>>>>> >>>>>> 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. >>>>> >>>>> Does the ACPI subsystem allow to track, how ACPI variables(?) like >>>>> IOST >>>>> are read and set? >>>> >>>> My guess would be that IOST is a field in an operation region which >>>> would indicate that it is initialized by the bootstrap part of the >>>> BIOS. >>> >>> Thank you for your answer. But how can I verify that? >> >> Inspecting the ACPI tables from the system in question could help you >> to find out whether or not IOST really is a field in an operation >> region, but its initial value may not be possible to determine this >> way. >> >>> Is there a Linux kernel parameter, that would print it? >> >> Not that I know of. > > I created an issue in the Linux kernel bugtracker [1] and attached the > output of `acpidump` there. > > Could > > If ((IOST & 0x4000)) > > versus > > If ((IOST & 0x0400)) > > be a typo? > Yes, it could. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-10-13 15:18 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-10-07 21:18 i8042_init: PS/2 mouse not detected with ACPIPnP/PnPBIOS Paul Menzel 2020-10-07 22:16 ` Dmitry Torokhov 2020-10-10 20:32 ` Paul Menzel 2020-10-12 10:39 ` Rafael J. Wysocki 2020-10-12 10:50 ` Paul Menzel 2020-10-12 11:00 ` Rafael J. Wysocki 2020-10-13 15:00 ` Paul Menzel 2020-10-13 15:17 ` Rafael J. Wysocki
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