Trackpoint (psmouse) dead after suspend/resume (S3)

Trackpoint (psmouse) dead after suspend/resume (S3)

[ole.rohne-vJEk5272eHo]

On 2.6.7, the suspend/resume cycle kills the trackpoint on my Fujitsu
P2120. This definitely worked before, but I can't figure out what the
critical change is. Here is the approximate history:

2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
2.6.4: both devices work, no reloading necessary
2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help

I've poked around a bit and it seems that all writes to the AUX-port
times out, this causes the psmouse to disconnect.

Any suggestions appreciated, Ole



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Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[Vojtech Pavlik]

On Tue, Jul 20, 2004 at 12:43:14AM +0200, ole.rohne-vJEk5272eHo@public.gmane.org wrote:
> On 2.6.7, the suspend/resume cycle kills the trackpoint on my Fujitsu
> P2120. This definitely worked before, but I can't figure out what the
> critical change is. Here is the approximate history:
> 
> 2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
> 2.6.4: both devices work, no reloading necessary
> 2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help
> 
> I've poked around a bit and it seems that all writes to the AUX-port
> times out, this causes the psmouse to disconnect.
 
There's a bug in the s3 code in 2.6.7 that doesn't call the proper
callbacks upon resume. IIRC this was fixed recently.

-- 
Vojtech Pavlik
SuSE Labs, SuSE CR


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Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[ole.rohne-vJEk5272eHo]

Vojtech> There's a bug in the s3 code in 2.6.7 that doesn't call the
Vojtech> proper callbacks upon resume. IIRC this was fixed recently.

Thanks for letting me know!

For the Fujitsu P2120 I ended up having to change the DSDT for it to
work with 2.6.7. I'll try and see if the stock DSDT works with 2.6.8
when it comes out.

Regards, Ole



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Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[Pavel Machek]

Hi!

> 2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
> 2.6.4: both devices work, no reloading necessary
> 2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help
> 
> I've poked around a bit and it seems that all writes to the AUX-port
> times out, this causes the psmouse to disconnect.
> 
> Any suggestions appreciated, Ole

See if psmouse.proto=bare helps?
-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         



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Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[Nathan Bryant]

Pavel Machek wrote:
> Hi!
> 
> 
>>2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
>>2.6.4: both devices work, no reloading necessary
>>2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help
>>
>>I've poked around a bit and it seems that all writes to the AUX-port
>>times out, this causes the psmouse to disconnect.
>>
>>Any suggestions appreciated, Ole
> 
> 
> See if psmouse.proto=bare helps?

maybe also i8042.reset?

Ole, is it losing interrupts or is it completely dead? I know that serio 
only has knowledge of the generic i8042 device; in most cases it doesn't 
know a lot about initializing multi-function controller chips, such as 
the Winbond. The Winbond documentation is a little obscure on this 
subject - OK, a lot obscure - depending on which chip docs you look at, 
it only lists the register maps and doesn't describe the I/O port 
accesses needed to set the registers. However, if you look at 
parport_pc.c, you can see how to access the registers.

In any case, psmouse is just a shim between input and serio, not the 
driver itself, so as you have seen, reloading it doesn't help in most cases.


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Re: Trackpoint (psmouse) dead after suspend/resume (S3)

[ole.rohne-vJEk5272eHo]

Ole> 2.5.xx: keyboard and trackpoint dead, reloading psaux module fixes both
Ole> 2.6.4: both devices work, no reloading necessary
Ole> 2.6.7: keyboard works, trackpoint dead, reloading psmouse doesn't help

Pavel> See if psmouse.proto=bare helps?

Nathan> maybe also i8042.reset?

I had concluded that the track-point hardware was in fact not powered
up and I was able to work around the problem by telling BIOS I'm
running some Windows. This makes the S3 resume sequence take notably
longer - it used to wake up almost promptly but now it spends a few
seconds flashing various symbols ("LEDs") before it comes back to C.

Strangely, it seems that I have to use a custom DSDT where I
explicitly initialize "Name (TOSS, 0x01)", I'm not able to achieve the
same effect by means of acpi_osi.

Strangely as well, 2.6.4 worked (and had the "long" resume
sequence) with the stock DSDT.

Thanks, Ole


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