** 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. 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, which is NNN centimetres LONGER/SHORTER on the working batch. + 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 USB Touchscreen not 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
