Comment 12 for bug 1310800
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| Jacob Nevins (0jacobnk-ulp) wrote Re: 056a:0302 Trusty Thar, kernel 3.13: automatic load of wacom.ko driver cause a "hard" kernel panic | #12 |
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(Get the code!)
I also have a recent Wacom tablet (CTH-480S, USB 056a:0302) and can reproduce a kernel panic with a freshly downloaded Xubuntu 14.04 i386 installation image running off a USB stick on my 32-bit netbook -- boot Xubuntu, plug the tablet in, and boom. So this is a real problem with the Trusty kernel on the installation media, regardless of whether it exists in newer upstream kernels (for which the situation seems confused).
The Ubuntu kernel team backported support for this range of tablets to the Trusty kernel by cherry-picks at (I believe) my instigation -- support for them only appeared upstream from 3.14, but a conversation on IRC resulted in the backported support (so I feel slightly responsible).
So, it's possible that this is an Ubuntu-specific problem related to the backport -- maybe not enough changes were backported? I did test some daily pre-release images (on amd64) and they worked for me fine then; this is the first time I've tried the final release.
(I haven't upgraded my amd64 machine to 14.04 yet; I'm still on 12.04, and with that I'm happily using the tablet with my own hand-rolled input-wacom 0.20.0 DKMS package. I haven't yet tried the amd64 installation image to see if I can get a panic out of it.)
I'm happy to gather further diagnostic information as necessary to resolve this issue in Trusty.