https://bugzilla.kernel.org/show_bug.cgi?id=199523
Bug ID: 199523
Summary: ACPI IRQ 7 wrong detected on HP Envy x360
Product: ACPI
Version: 2.5
Kernel Version: 4.16
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: BIOS
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 275599
--> https://bugzilla.kernel.org/attachment.cgi?id=275599&action=edit
Disassembled ACPI Table
I tried to get the touchscreen work for HP Envy x360(Ryzen 2500u) on current
kernel and found out that the Interrupt for the GPIO driver get wrong detected
and configured. Maybe a typical bug in the ACPI table from BIOS.
In ACPI Table the IRQ is defined as
Interrupt (ResourceConsumer, Level, ActiveLow, Shared, ,, )
{
0x00000007,
}
but in dmesg it prints
[ 0.098531] ACPI: IRQ 7 override to edge, high
I just made a dirty hack to force "level, low" for this IRQ (and a change
related to other bug) and the touchscreen works as expected.
But it needs a true fix in the hardware detection and configuration.
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