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Tasklist

FS#11381 - kernel 2.6.26-ARCH: wacom.ko driver broken

Attached to Project: Arch Linux
Opened by Gerry (gerry) - Wednesday, 03 September 2008, 06:16 GMT
Last edited by Tobias Powalowski (tpowa) - Tuesday, 14 October 2008, 17:40 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture x86_64
Severity Low
Priority Normal
Reported Version None
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
The wacom.ko driver is broken in kernel 2.6.26-ARCH. With the broken driver, the cursor stops moving whenever the pen touches the tablet, so it's impossible to draw anything.

Replacing wacom.ko with one built from source from the linuxwacom project (linuxwacom.sf.net) fixes the problem. It's not an X problem, since I only replaced the kernel module.


Additional info:
* kernel 2.6.26-ARCH. The problem was also present on 2.6.25-ARCH. (Only tested 64-bit.)


Steps to reproduce:
* Have a wacom tablet, and X configured to use it =)
* In X, try moving the cursor while pressing the pen to the tablet. Cursor doesn't move.
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Tuesday, 14 October 2008, 17:40 GMT
Reason for closing:  Won't implement
Comment by Tobias Powalowski (tpowa) - Tuesday, 09 September 2008, 09:31 GMT
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.26.y.git;a=commit;h=e722409445fbe718f09f6d5e03d0ae84cf0954d0
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.26.y.git;a=commit;h=b345dc7da026016b65162b1ca7cfcd2c7212a285

you could try if reverting those changes helps for you, the module hasn't changed that much lately.
Comment by Tobias Powalowski (tpowa) - Saturday, 11 October 2008, 20:32 GMT
status on .27 kernel?
Comment by Gerry (gerry) - Tuesday, 14 October 2008, 11:35 GMT
.27 still has the problem.

I didn't try reverting those changes yet (linuxwacom is always a quick fix..), but they seem unrelated. One adds suspend support, the other just adds a cintiq id.
Comment by Gerry (gerry) - Tuesday, 14 October 2008, 11:53 GMT
I just found out that this is apparently a known problem with 0.8.1 (see http://wiki.archlinux.org/index.php/Wacom_Tablet#Linuxwacom_0.8.1_bug ), which is what I'm using since that's the version in the package repository (AUR). 0.8.1 is the development version, so it makes sense that the kernel will have the stable version (0.8.0), which appears to be incompatible. Sorry, I should have thought of that.
Comment by Tobias Powalowski (tpowa) - Tuesday, 14 October 2008, 11:58 GMT
this means your wacom is not supported yet, until a new version is pushed into the kernel.
means this is not a kernel bug
Comment by Gerry (gerry) - Tuesday, 14 October 2008, 14:44 GMT
Nah, it just means 0.8.0 and 0.8.1 aren't fully compatible. But I agree it's not a kernel bug.
Comment by Tobias Powalowski (tpowa) - Tuesday, 14 October 2008, 17:40 GMT
We don't patch the kernel on this module, you have to wait until upstream fixes it

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