This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-
bionic'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
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** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1792309

Title:
  Fix I2C touchpanels' interrupt storms after system suspend

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Committed
Status in linux-oem package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  In Progress
Status in linux-oem source package in Bionic:
  Fix Committed
Status in linux source package in Cosmic:
  Fix Committed
Status in linux-oem source package in Cosmic:
  Invalid

Bug description:
  [Impact]
  Some I2C touchpanels generate IRQ storm after system suspend/resume.

  [Test]
  After applying the fix, the IRQ storm stops generated by Raydium touchpanels.

  [Fix]
  Instead of requesting i2c reset, simply requesting the device to power on. 
The HID over I2C spec doesn't specify how the device should do upon resume from 
suspend, so some devices expect a power on instead of reset.

  [Regression Potential]
  Low. I tested other vendors' touchpanels, didn't observe any side effect.

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