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Message #140492
[Bug 1310800] ProcEnviron.txt
apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1310800/+attachment/4499318/+files/ProcEnviron.txt
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https://bugs.launchpad.net/bugs/1310800
Title:
056a:0302 Trusty Tahr, kernel 3.13: automatic load of wacom.ko driver
cause a "hard" kernel panic
Status in linux package in Ubuntu:
Confirmed
Bug description:
I have just upgraded to 14.04 from 13.10.
I have a wacom cth-480 touch+pen tablet, which was not recognized on
13.10 (kernel 3.11). With the stock kernel from 14.04, I have an
immediate kernel panic as soon as I plug in the tablet to the laptop.
The system is a asus 1005PE (32 bit install), Xubuntu, up-to date:
Linux asus-romano 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:08:14
UTC 2014 i686 i686 i686 GNU/Linux
The really strange thing is that if I manually load the driver with
`sudo modprobe wacom` *before* pluggin the tablet in, then the tablet
is recognized and works ok:
SYS: Apr 21 15:15:47 asus-romano kernel: [ 265.664161] usbcore: registered new interface driver wacom
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.088161] usb 2-1: new full-speed USB device number 2 using uhci_hcd
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.253626] usb 2-1: New USB device found, idVendor=056a, idProduct=0302
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.253641] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.253651] usb 2-1: Product: Intuos PTS
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.253659] usb 2-1: Manufacturer: Wacom Co.,Ltd.
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.257027] input: Wacom Intuos PT S Pen as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input14
SYS: Apr 21 15:15:52 asus-romano kernel: [ 270.260630] input: Wacom Intuos PT S Finger as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1/input/input15
SYS: Apr 21 15:15:52 asus-romano mtp-probe: checking bus 2, device 2: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1"
SYS: Apr 21 15:15:52 asus-romano mtp-probe: bus: 2, device: 2 was not an MTP device
A screenshot of the kernel panic is added. I can reproduce it at will.
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References