Hello,

I have a laptop with an intel GPU and a nvidia GPU and therefore optimus; to
manage all this I use bumblebee from X11:bumblebee which is the following
packages 
- VirtualGL             
- VirtualGL-devel       
- bbswitch              
- bbswitch-kmp-default  
- bumblebee             
- dkms                  
- nvidia-bumblebee      
- nvidia-bumblebee-32bit
- primus                 

So far the following packages were installed and all of them worked correctly:
- bbswitch-kmp-default 0.8_k5.3.18_lp152.69-lp152.42.1
(0.8_k5.3.18_lp152.72-lp152.44.1) 
- kernel-default 5.3.18-lp152.69.1 (5.3.18-lp152.72.1)
- kernel-default-devel 5.3.18-lp152.69.1 (5.3.18-lp152.72.1)
- kernel-devel 5.3.18-lp152.69.1 (5.3.18-lp152.72.1)
- kernel-preempt-devel 5.3.18-lp152.69.1 (5.3.18-lp152.72.1) 
- kernel-syms 5.3.18-lp152.69.1 (5.3.18-lp152.72.1)

Today I do a zypper update and surprise, the package kernel-preempt
(5.3.18-lp152.72.1) is selected for installation in addition to the upgrade of
the packages previously mentioned.

After investigation it turns out that kernel-syms 5.3.18-lp152.72.1 requires:
- kernel-devel = 5.3.18-lp152.72 
- kernel-default-devel = 5.3.18-lp152.72
- kernel-preempt-devel = 5.3.18-lp152.72

kernel-preempt-devel = 5.3.18-lp152.72 requires kernel-devel = 5.3.18-lp152.72
and kernel-preempt = 5.3.18-lp152.72 while kernel-preempt-devel =
5.3.18-lp152.69.1 requires only kernel-devel = 5.3.18-lp152.69

I think that there must be a problem of dependencies somewhere in these
packages because I don't understand the interest to install kernel-preempt
while kernel-default gives me satisfaction and I would not have the use of
kernel-preempt. 

Only one kernel should do the trick !  Maybe it's a bug linked to the evolution
of the kernel distribution under leap 15.3 (jump project) ?

thank you for your help

cheers