Re: [REGRESSION] 2017 Pixelbook backlight control d oesn’t work with 7.1 kernel

On 7/12/26 07:50, Greg KH wrote:
> On Sat, Jul 11, 2026 at 12:38:02PM -0600, Papool Chaudhari wrote:
>> I tested both parent commits of the merge
>> b3793af3277f65d256d67f9949e760b434ff66dd on my 2017 i5 Pixelbook (Eve)
>> as requested, and unfortunately, neither side is bootable:
>>
>> Side A (51cc1c427461): Fails to boot. Completely hangs early at
>> "Loading initial ram disk".
>>
>> Side B (88919bedabb8): Fails to boot. Hangs at the exact same early
>> "Loading initial ram disk" stage.
> 
> That sounds like a different issue than the backlight, right?
> 
> Why not disable the ramdisk entirely for doing kernel build testing like
> this?  It's not normally required unless you have some encrypted
> partitions/disks.
I also wonder if something went sideways with your build env and causes
this, like some odd .config thing. Might be worth building a newer
kernel once more that was known to work at least mostly in the past and
check if that still works.

Ciao, Thorsten