Am 2018-09-27 13:02, schrieb Андрей:
>> Start it in a terminal window. Do you see any errors there?
>
> Yes:
>

> X Error: BadAccess (attempt to access private resource denied) 10
>   Extension:    130 (MIT-SHM)
>   Minor opcode: 1 (X_ShmAttach)
>   Resource id:  0x15f

No problem here. Did you mix some incompatible package archives?
What is your /etc/apt/sources.list, /etc/apt/sources.list.d/*.list?