Re: [gentoo-user] kernel 5.15+ (thru 5.16.5)

[Jack]

On 2/3/22 03:17, Michael wrote:
> On Thursday, 3 February 2022 08:04:07 GMT Neil Bothwick wrote:
>> On Wed, 2 Feb 2022 21:02:46 -0500, Alan Grimes wrote:
>>> Do any of the kernels post 5.15.0 boot? I tried 5.15.2 and imediately
>>> wrote off the 5.15 branch because it didn't even boot.
>>>
>>> I came back to 5.16.5, same symptom, says "loading linux 5.16.5" and
>>> then hangs, no further kernel output.
>>>
>>> 5.14.20 works great with same config, no known issues.
>>>
>>> Now it's possible that something fantasmagorically stupid is going on
>>> here, as is usual, but for the love of god WHY, just WHY?!?!??!
>> I have the same with one machine, see the thread "Kernel 5.15.11 won't
>> boot". Nothing there helped me, and I haven't had time to investigate
>> further, but there may be something for you.
> I recall reading some foobar with "simple framebuffer" cropping up and also I
> found this bug in case it helps with either of your machines:
>
> https://bugs.gentoo.org/821406

I think there are possibly two separate issues going on here, at least 
for me.  I've been booting 5.16.1 and now 5.16.4 with no problems.  
However, I recently tried booting 5.17-rc1 and rc2 (direct from 
kernel.org, no gentoo package yet) and they both just sat there forever 
after "Loading initial ramdisk."  Going back to 5.16.4, I noticed that 
there was far less logging to console than usual until some video switch 
happened.  Adding the simple framebuffer got all my logging back.  It 
also got a bunch of logging output with 5.17-rc2, but that still won't 
boot for me - which is something for a different thread.  When the 
system is just sitting there - try to ssh in.  It has probably actually 
booted just fine, it's just not putting anything out to the screen.

Also, be careful - if you just search the config for "SIMPLE" it finds 
two FB related entries - you need one of them and not the other, but I 
am sitting at the wrong computer to check which.

Jack