[SRU][F/H/I/unstable][PATCH 0/1] Fix a keyboard issue for some medion laptops

Hui Wang hui.wang at canonical.com
Tue Oct 5 08:38:08 UTC 2021

On 10/5/21 4:34 PM, Stefan Bader wrote:
> On 23.09.21 12:11, Hui Wang wrote:
>> BugLink: https://bugs.launchpad.net/bugs/1909814
>> [Impact]
>> The keyboard of some medion laptops can't work under Linux.
>> [Fix]
>> Backport a upstream patch, after applying the patch, the keyboard
>> will skip the irq override from the acpi resource layer, and the
>> keyboard could work normally.
> What is unclear to me, does this require "ACPI: resources: Add checks 
> for ACPI IRQ override" to be applied or reverted as pre-requisite? For 
> H/F this got reverted.
It requires the "ACPI: resources: Add checks for ACPI IRQ override" to 
be reverted first, then apply the patch of this SRU.



>> [Test]
>> Booting the patched kernel, use the keyboard to do the input.
>> [Where problems could occur]
>> The patch will skip the irq override based on the DMI info, so
>> if a medion laptop which has the same DMI info and the irq 1
>> needs to be overriden, this patch will introduce regression on
>> the machine, but this possibility is very low. If this happens,
>> we will consider to add more DMI match info in the table.
>> Hui Wang (1):
>>    ACPI: resources: Add DMI-based legacy IRQ override quirk
>>   drivers/acpi/resource.c | 49 +++++++++++++++++++++++++++++++++++++++--
>>   1 file changed, 47 insertions(+), 2 deletions(-)

More information about the kernel-team mailing list