Bug 196761
| Summary: | ELAN I2C touchpad stops working shortly after boot without pinctrl-amd.c patch | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | adebeus |
| Component: | Input Devices | Assignee: | drivers_input-devices |
| Status: | NEW --- | ||
| Severity: | normal | CC: | dmitry.torokhov, mwaboff |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.12.8 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | pinctrl-amd fix from ubuntu | ||
Does it help if you remove line irqflags = dev->of_node ? 0 : IRQF_TRIGGER_FALLING; from drivers/input/moune/elan_i2c_core.c ? |
Created attachment 258091 [details] pinctrl-amd fix from ubuntu On an Acer Aspire E5-553G laptop, the touchpad ceases to function shortly after boot. I have observed this behavior with every kernel I've tried with the exception of the Ubuntu 4.4 series kernels. I've traced the fix to a specific patch Ubuntu has applied to the pinctrl-amd.c file, which is attached, by compiling my own (vanilla) kernel both with and without the attached patch applied. I'm currently running Gentoo with a 4.4.83 LTS kernel so I can use this patch, but would like to be able to use the latest and greatest. I haven't tried porting the Ubuntu fix to newer kernels but I assume a similar fix should be possible.