on 16/07/07 15:33 Soeren Sonnenburg said the following:
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 )...
I tried building the 0.14.7~git20070517 driver from source. It
built fine, but it didn't play well with my Ubuntu distribution version
2:1.3.0.0.dfsg-6ubuntu2, failing with:
(II) Loading /usr/lib/xorg/modules/input//synaptics_drv.so
dlopen: /usr/lib/xorg/modules/input//synaptics_drv.so: undefined
symbol: __stack_chk_fail_local
(EE) Failed to load /usr/lib/xorg/modules/input//synaptics_drv.so
so I reverted to the 0.14.6-0ubuntu7 driver, which was working ok.
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...
No, I'm fairly sure it is to do with the appletouch, since it can
be fixed by removing and re-inserting it. I think the fglrx component
of the failure happens after the appletouch fails to provide a pointer
device. Also, the bug seems to have some connection to the usb system,
since it happens much more often if the machine is booted up with large
numbers of usb devices connected, particularly if a usb hub is used.
Maybe there is some sort of race in the allocation of usb devices ?
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.
Your patch fixed the problem, although sometimes it seems to
slightly affect the sensitivity of the multi-finger taps after wakeup.
It also prevents the svn patch
"appletouch-shut-up-when-it-has-nothing-to-say.patch" from applying
cleanly.
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...
This doesn't seem to happen now - maybe because the "appletouch-shut-up-when-it-has-nothing-to-say.patch"
didn't install ?
Thanks,
Soeren
Thanks for all your help,
Dan
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