cth-470 and Red Hat 6
Duffy, Peter <Peter.Duffy <at> echostar.com>
2012-02-02 10:18:14 GMT
Hi,
Just wondering if
anyone has got the Wacom Bamboo Pen & Touch (CTH-470) working under Red Hat
Enterprise 6 (RHEL6) (or CentOS 6) - and if so, what procedure was
followed?
I've been trying
for several weeks to get it working. One key
problem that I'm hitting is that in the input-wacom driver source (I'm using
0.12.1), there are three separate source directories, one each for kernels
2.6.30, 2.6.36 and 2.6.38. The problem is that RHEL6 uses 2.6.32 only (Red Hat
apparently merge in changes from later kernels and increment their own
sub-modification number) and because of this, the input-wacom build picks up the
2.6.30 version of the driver source. But the CTH-470 device (device id 0xDE) is
only defined in the 2.6.38 source.
This issue affects
any distro which is based on Red Hat Enterprise (including CentOS and Scientific
Linux) - but not Fedora Core, as this isn't limited to the single
kernel version.
Is there any chance
that support for this device could be included in the 2.6.30 source? (I'd be
happy to have a go at porting it across myself, if there's no
obvious gotcha which would mean that it would be doomed to failure
from the start. I realise that it wouldn't be trivial, as there seem to
be large-scale changes between the 2.6.30 and 2.6.38
drivers.)
By the way - another
interesting issue with RHEL6 and derivatives is that virtually all the
documentation says that xorg > 1.7 uses udev for hot-plug devices -
but this isn't the case in RHEL6: at least up to the latest supported
version of xorg (1.10.4) it still uses hal. (It's easy to prove: reboot into
runlevel 3, kill the hal service ("service haldaemon stop") and then start X:
result - no mouse or keyboard.)
Also by the way -
someone's probably wondering why I don't just ditch the Red Hat kernel
and instead use the latest 2.6 kernel built from source. Yes, I'd love to -
but unfortunately it isn't an option, as our linux workstations run
software which relies on the Red Hat kernel being present.
Regards,
Peter
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