[SRU] [Bionic] [PATCH 0/1] Fix non-working touchpad after reboot

Kai-Heng Feng kai.heng.feng at canonical.com
Thu Dec 20 06:52:52 UTC 2018

BugLink: https://bugs.launchpad.net/bugs/1728244

This patch is required for another SRU "Fix and issue that LG I2C
touchscreen stops working after reboot".

Hantick touchpad stops working after reboot.

Disable runtime power management for the touchpad.

User confirmed it fixed the issue.
Some users reported it doesn't work for them, I'll ask them to file new
bugs for different touchpads.

[Regression Potential]
Low. Disable runtime power management doesn't affect devivce's
funtionality. In general desktop usage the graphical session opens the
touchpad HID device so the touchpad never get runtime suspended, so it
won't hurt power in this case.

Anisse Astier (1):
  HID: i2c-hid: disable runtime PM operations on hantick touchpad

 drivers/hid/i2c-hid/i2c-hid.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)


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