Comment # 14 on bug 1213778 from Vadim Krevs

(In reply to Takashi Iwai from comment #13)
> Thanks.  Now we may try to figure out which kernel version started showing
> the problem.
> 
> There are a few kernel packages in my OBS repos, e.g. home:tiwai:kernel:6.3,
> home:tiwai:kernel:6.2, ...  Those are the last TW kernels of each kernel
> version, and they also contain "backport" repo that are built for Leap
> (instead of "standard" for TW).  e.g.
>  
> http://download.opensuse.org/repositories/home:/tiwai:/kernel:/6.3/backport/
> 
> Could you try one by one and verify which kernel works and which is broken?
> This will be useful for the upstream.
> 
> BTW, when you install multiple kernels, it's better to lock the main kernel
> you're using with "zypper addlock" for avoiding it wiped out.  Also, you can
> increase the number of installable kernels by editing /etc/zypp/zypp.conf
> and modifying the line to define "multiversion.kernels", e.g.
>   multiversion.kernels = latest,latest-1,latest-2,latest-3,running

I used bisection reduce the number of kernels to test to find the working
kernel version in the
http://download.opensuse.org/repositories/home:/tiwai:/kernel:/{5.15-6.3}/backport/
repos. 

kernel-default-5.19.12-lp153.1.1.g95fa5b8.x86_64 - broken
kernel-default-5.17.9-lp153.1.1.gc1eda89.x86_64 - broken
kernel-default-5.16.16-lp153.1.1.gcdbc159.x86_64 - broken
kernel-default-5.15.13-lp153.1.1.g01786ae.x86_64 - works as expected (just like
the latest 15.4 kernel).