I've got Ubuntu desktop 13.04, but the same issue was while testing 12.04 live.
Sometime the touchscreen works without problems for some hours. Other times I have a crush of compiz about every minute.
syslog loops this message (touchscreen working or not):
Code:
Sep 22 01:55:25 tama-X202E kernel: [37699.050537] usb 1-1.3: new full-speed USB device number 26 using ehci-pci
Sep 22 01:55:25 tama-X202E kernel: [37699.229679] usb 1-1.3: not running at top speed; connect to a high speed hub
Sep 22 01:55:25 tama-X202E kernel: [37699.644848] usb 1-1.3: New USB device found, idVendor=0457, idProduct=1013
Sep 22 01:55:25 tama-X202E kernel: [37699.644863] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Sep 22 01:55:25 tama-X202E kernel: [37699.644872] usb 1-1.3: Product: SiS HID Touch Controller
Sep 22 01:55:25 tama-X202E kernel: [37699.644880] usb 1-1.3: Manufacturer: USBest Technology
Sep 22 01:55:25 tama-X202E kernel: [37699.730710] input: USBest Technology SiS HID Touch Controller as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input519
Sep 22 01:55:25 tama-X202E kernel: [37699.731479] hid-multitouch 0003:0457:1013.01FE: input,hiddev0,hidraw0: USB HID v1.00 Device [USBest Technology SiS HID Touch Controller] on usb-0000:00:1a.0-1.3/input0
Sep 22 01:55:25 tama-X202E kernel: [37699.731806] usb 1-1.3: USB disconnect, device number 26
Sep 22 01:55:25 tama-X202E mtp-probe: checking bus 1, device 26: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3"
Sep 22 01:55:25 tama-X202E mtp-probe: bus: 1, device: 26 was not an MTP device
Every second I've a loop with a new device number.
I found how to avoid compiz crashes by disabling touchscreen:
Code:
sudo rmmod hid_multitouch
Or better, doing it at boot time:
Code:
sudo echo "blacklist hid_multitouch" > /etc/modprobe.d/blacklist-hid_multitouch.conf
I'd like to find a way to fix the touchscreen feature, but in the meantime I'll do without it. Under Windows 8 I haven't found any problem to use it.
Searching on the net I found another similar problem here, where I posted my partial solution:
http://forum.ubuntu-fr.org/viewtopic.php?pid=14722361
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