Durning instalation this kernel i had this:

arek@matebook:~/Pobrane$ sudo dpkg -i linux-image-unsigned-5.4.0-050400rc5-generic_5.4.0-050400rc5.201910271430_amd64.deb > log
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.4.0-050400rc5-generic
W: Possible missing firmware /lib/firmware/amdgpu/navi12_gpu_info.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_gpu_info.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_gpu_info.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_gpu_info.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_asd.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_sos.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_asd.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_sos.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_asd.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_sos.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/vega20_ta.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_asd.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_mec2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_me.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_pfp.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_ce.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_mec2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/raven_kicker_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_mec2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_me.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_pfp.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_ce.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_rlc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_mec2.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_mec.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_me.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_pfp.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_ce.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_mec2_wks.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_mec_wks.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_me_wks.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_pfp_wks.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_ce_wks.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_sdma.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_sdma.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_sdma1.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_sdma.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_sdma1.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_sdma.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi10_mes.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_vcn.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_vcn.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/renoir_vcn.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_vcn.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_smc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi14_smc.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/arcturus_smc.bin for module amdgpu
I: The initramfs will attempt to resume from /dev/dm-2
I: (/dev/mapper/vgubuntu-swap_1)
I: Set the RESUME variable to override this.
/etc/kernel/postinst.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.4.0-050400rc5-generic
Found initrd image: /boot/initrd.img-5.4.0-050400rc5-generic
Found linux image: /boot/vmlinuz-5.3.0-19-generic
Found initrd image: /boot/initrd.img-5.3.0-19-generic
Found linux image: /boot/vmlinuz-5.3.0-18-generic
Found initrd image: /boot/initrd.img-5.3.0-18-generic
Adding boot menu entry for EFI firmware configuration
done

After rebot and choice this kernel, system has random freez for fiew seconds very often. But no gfx glitches.