Comparing your two dmesg logs, I can see that the touchscreen is identified in 
the good dmesg, but nothing in the bad one.  Here's the message from the good 
[    3.296644] input: SYNA7500:00 06CB:3AF0 as 
[    3.298646] hid-multitouch 0018:06CB:3AF0.0002: input,hidraw0: I2C HID v1.00 
Device [SYNA7500:00 06CB:3AF0] on i2c-SYNA7500:00

I see one touchscreen specific change from 4.12.0-13 and  4.13.0-10.  I 
disabled this option and reverted commit  78bcac7b2ae1e4f in this test kernel:

Can you give this kernel a try?  If it still has the bug, we can bisect
between 4.12.0-13 and  4.13.0-10 and see if we can narrow it down that

You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

  touchscreen that worked in artful with 4.12 no longer works with 4.13

To manage notifications about this bug go to:

ubuntu-bugs mailing list

Reply via email to