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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1862567
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu Bionic)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1862567
Title:
[SRU][B/OEM-B] Fix multitouch support on some devices
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem package in Ubuntu:
New
Status in linux source package in Bionic:
Incomplete
Status in linux-oem source package in Bionic:
New
Bug description:
[Impact]
Some LG touchscreens reported themselves as generic touch devices,
actually it is multitouch devices.
Even after adding IDs in hid-multitouch, hid-generic will bind the device
still.
multitouch features are not supported.
[Fix]
commit e04a0442 make hid-generic work nicely with other drivers like
hid-multitouch.
If other drivers match the devices, hid-generic will step back.
This patch will benefit many devices to support their own drivers without
adding IDs.
[Test]
Verified on LG/ELAN/RAYDIUM touchscreens with positive results.
[Regression Potential]
Medium.
commit e04a0442 is included by 4.16 kernel, only bionic kernel should be
applied.
This commit is based on the other 3 patches, mostly changes are moving codes
to hid-quirk.c.
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