** Description changed: Filing here per request at: http://irclogs.ubuntu.com/2015/11/24/%23ubuntu-devel.html#t14:35 - I have approximately 300 USB touch panels. These are from two different - batches, but all report the same USB ID 0c45:8419. The manufacturer - told me they had changed the firmware without changing the USB - ID/version because they did not consider the change important. Both - batches work correctly on Ubuntu 10.04, but only the first batch works - on 14.04. The remaining batch does not so this is a regression. + The issue is regarding touch infra-red overlay touch screen panels from + Wivitouch in China: + + http://www.wivitouch.com/sdp/1079694/4/pd-5199630/7116924-2132434/Multitouch_screen_infrared_touch_screen_19.html + http://www.diytrade.com/china/pd/7116927/Multitouch_screen_infrared_touch_screen_18_5.html + http://img.diytrade.com/smimg/1079694/17764824-1256906-0/nn/58f1.jpg + + I have approximately 300 USB touch panels, from two different batches, + but all report the same USB ID 0c45:8419. The manufacturer told me they + had changed the firmware without changing the USB ID/version because + they did not consider the change important. Both batches work correctly + on Ubuntu 10.04, but only the first batch works on 14.04. The remaining + batch does not so this is a regression. After plugging in, both batches appear equivalently under: /dev/input/eventNN and for both 'evtest' reports: Input device ID: bus 0x3 vendor 0xc45 product 0x8419 version 0x100 Input device name: "SONiX USB Device" … Presumably something is occuring that causes a version version of 'libev' to handle one batch differently. Attached is the output of running: $ sudo lsusb -vvvv -c -d 0c45:8419 > ….txt for one device from each of the two batches, which confirms that they appear identically. I have tested 250/250 (working) from the first batch, and 10/50 (not-working) from the second batch. The only way to tell the batches apart is by the length of the USB cable, the first (working) batch have USB cables that are 15-20 centimetres long, and the second (non-working) batch have USB cables that are ~1 metre long.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1519393 Title: New revision of 0c45:8419 Microdia/Wivitouch USB Infrared Touchscreen no longer working under 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evtest/+bug/1519393/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
