Re: [Mactel-linux-devel] trackpad interactions

[Soeren S. <mac...@nn...>]

On Mon, 2007-07-16 at 10:32 +1000, Daniel M. Newman wrote:
> Using kernel 2.6.22 and the mactel-linux revision 133 patch set from svn
> on a Macbook Pro 15in, there seem to be a couple of peculiarities in the
> trackpad behaviour.

please try the attached kernel patch and make sure that you are using a
new X synaptics driver (e.g. 0.14.7~git20070517 )...

> 1. During boot-up, the appletouch module always loads normally. 
> However, as X (using the fglrx driver 8.38.6) starts up I sometimes
> (about one time in five) get an error that the core pointer is
> unavailable.  When this happens, the following shows up in syslog:
> 
> kernel: BUG: scheduling while atomic: Xorg/0x00000001/2826
> kernel:  [schedule+1267/2448] schedule+0x4f3/0x990
> kernel:  [_spin_unlock+13/48] _spin_unlock+0xd/0x30
> kernel:  [__wake_up_common+57/112] __wake_up_common+0x39/0x70
> kernel:  [__wake_up+56/80] __wake_up+0x38/0x50
> kernel:  [<f89d8f81>] irqmgr_wrap_shutdown+0xe1/0x150 [fglrx]
> kernel:  [<f89c9f45>] firegl_takedown+0x625/0xc50 [fglrx]
> kernel:  [proc_delete_inode+0/96] proc_delete_inode+0x0/0x60
> kernel:  [<f89c900f>] firegl_release+0x12f/0x190 [fglrx]
> kernel:  [<f89bd44f>] ip_firegl_release+0xf/0x20 [fglrx]
> kernel:  [__fput+151/368] __fput+0x97/0x170
> kernel:  [filp_close+73/128] filp_close+0x49/0x80
> kernel:  [put_files_struct+156/192] put_files_struct+0x9c/0xc0
> kernel:  [do_exit+314/2016] do_exit+0x13a/0x7e0
> kernel:  [<f8a14be9>] IRQMGR_WorkerThreadRoutine+0x29/0x30 [fglrx]
> kernel:  [<f89bab90>] kasThreadRoutineHelper+0x0/0x20 [fglrx]
> kernel:  [<f89bab90>] kasThreadRoutineHelper+0x0/0x20 [fglrx]
> kernel:  [<f89d8d2e>] IRQMGR_CallbackWrapper+0xe/0x20 [fglrx]
> kernel:  [<f89bab90>] kasThreadRoutineHelper+0x0/0x20 [fglrx]
> kernel:  [kernel_thread_helper+13/20] kernel_thread_helper+0xd/0x14
> 
> Removing and re-inserting appletouch generally fixes this, although
> sometimes I have to do the remove and reinsert twice.

this sounds more like a bug in fglrx... but I've yet to see this to
happen...

> 2. I have my screen set to blank after a period of non-usage.  When
> waking up after this happens, the trackpad cursor no longer follows
> finger movements reliably.  Removing and re-inserting the appletouch
> module fixes this, but does not re-enable response to two- and three-
> finger taps.  Restarting gdm fixes both problems.

that should be fixed by the patch.

> 3.  Trackpad button presses sometimes do not generate an immediate
> response.  However, if the trackpad button is pressed and no response
> happens, a small movement of the cursor will cause the response to
> occur.  It seems that the button press input is being queued, but the
> queue is not checked until trackpad motion is detected.  I thought this
> might be due to my xorg.conf settings, but these seem to be in
> accordance with the various recommendations (see below).

strange... 

Please report back whether it still happens with the attached patch and
a newer synaptics xorg driver...

Thanks,
Soeren