Fix unusable touchpad on TGL laptops
Bug #1907466 reported by
Kai-Heng Feng
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
| linux (Ubuntu) |
Fix Released
|
High
|
Unassigned | ||
| Focal |
Won't Fix
|
Undecided
|
Unassigned | ||
| linux-oem-5.10 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| Focal |
Fix Released
|
High
|
Unassigned | ||
Bug Description
[Impact]
Touchpad doesn't work after boot.
kernel: i2c_designware i2c_designware.1: controller timed out
[Fix]
"Actually disable Tx and Rx buffers on GPIO request".
[Test]
Bootup a TGL laptop. Touchpad doesn't work.
With the fix applied, touchpad always work after boot.
[Where problems could occur]
Intel pinctrl can change between GPIO mode or IRQ mode, both effect many
other devices. So problems can happen all across the board.
However, the regression happens in v5.9, so no user really received the
change.
| Changed in linux (Ubuntu Focal): | |
| status: | New → Won't Fix |
| Changed in linux-oem-5.10 (Ubuntu): | |
| status: | New → Invalid |
| Changed in linux (Ubuntu): | |
| status: | New → Confirmed |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| status: | New → Confirmed |
| Changed in linux (Ubuntu): | |
| importance: | Undecided → High |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| importance: | Undecided → High |
| tags: | added: oem-priority originate-from-1906636 somerville |
| Changed in linux-oem-5.10 (Ubuntu Focal): | |
| status: | Confirmed → Fix Released |
| Changed in linux (Ubuntu): | |
| status: | Confirmed → Fix Released |
| Changed in hwe-next: | |
| status: | New → Fix Released |
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