when I'm installing these kenal in terminal it shows following outputs welcome@HP:~$ cd ~/Downloads welcome@HP:~/Downloads$ sudo dpkg -i linux*.deb [sudo] password for welcome: Selecting previously unselected package linux-headers-4.18.0-041800rc6. (Reading database ... 343372 files and directories currently installed.) Preparing to unpack linux-headers-4.18.0-041800rc6_4.18.0-041800rc6.201807221830_all.deb ... Unpacking linux-headers-4.18.0-041800rc6 (4.18.0-041800rc6.201807221830) ... Selecting previously unselected package linux-headers-4.18.0-041800rc6-generic. Preparing to unpack linux-headers-4.18.0-041800rc6-generic_4.18.0-041800rc6.201807221830_amd64.deb ... Unpacking linux-headers-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... Selecting previously unselected package linux-image-unsigned-4.18.0-041800rc6-generic. Preparing to unpack linux-image-unsigned-4.18.0-041800rc6-generic_4.18.0-041800rc6.201807221830_amd64.deb ... Unpacking linux-image-unsigned-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... Selecting previously unselected package linux-modules-4.18.0-041800rc6-generic. Preparing to unpack linux-modules-4.18.0-041800rc6-generic_4.18.0-041800rc6.201807221830_amd64.deb ... Unpacking linux-modules-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... Setting up linux-headers-4.18.0-041800rc6 (4.18.0-041800rc6.201807221830) ... Setting up linux-headers-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... Setting up linux-modules-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... Setting up linux-image-unsigned-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... I: /vmlinuz.old is now a symlink to boot/vmlinuz-4.15.0-29-generic I: /initrd.img.old is now a symlink to boot/initrd.img-4.15.0-29-generic I: /vmlinuz is now a symlink to boot/vmlinuz-4.18.0-041800rc6-generic I: /initrd.img is now a symlink to boot/initrd.img-4.18.0-041800rc6-generic Processing triggers for linux-image-unsigned-4.18.0-041800rc6-generic (4.18.0-041800rc6.201807221830) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-4.18.0-041800rc6-generic W: Possible missing firmware /lib/firmware/amdgpu/vega12_gpu_info.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_asd.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_sos.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_asd.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_sos.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_rlc.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_mec2.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_mec.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_me.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_pfp.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_ce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_rlc.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_mec2.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_mec.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_me.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_pfp.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_ce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_rlc.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_mec2.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_mec.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_me.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_pfp.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_ce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_sdma1.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_sdma.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_sdma1.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_sdma.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_sdma1.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_sdma.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_uvd.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_uvd.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_uvd.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_vce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_vce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_vce.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega20_smc.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vega12_smc.bin for module amdgpu W: Possible missing firmware /lib/firmware/amdgpu/vegam_smc.bin for module amdgpu W: initramfs-tools configuration sets RESUME=UUID=eb9460a1-e850-48dc-864d-0534a133da40 W: but no matching swap device is available. I: The initramfs will attempt to resume from /dev/sda2 I: (UUID=a8edd255-41b1-4cae-9715-589967c93a37) I: Set the RESUME variable to override this. /etc/kernel/postinst.d/x-grub-legacy-ec2: Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /boot/vmlinuz-4.15.0-29-generic Found kernel: /boot/vmlinuz-4.15.0-24-generic Found kernel: /boot/memtest86+.bin Found kernel: /boot/vmlinuz-4.18.0-041800rc6-generic Found kernel: /boot/vmlinuz-4.15.0-29-generic Found kernel: /boot/vmlinuz-4.15.0-24-generic Found kernel: /boot/memtest86+.bin Replacing config file /run/grub/menu.lst with new version Updating /boot/grub/menu.lst ... done /etc/kernel/postinst.d/zz-update-grub: Generating grub configuration file ... Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported. Found linux image: /boot/vmlinuz-4.18.0-041800rc6-generic Found initrd image: /boot/initrd.img-4.18.0-041800rc6-generic Found linux image: /boot/vmlinuz-4.15.0-29-generic Found initrd image: /boot/initrd.img-4.15.0-29-generic Found linux image: /boot/vmlinuz-4.15.0-24-generic Found initrd image: /boot/initrd.img-4.15.0-24-generic Adding boot menu entry for EFI firmware configuration done welcome@HP:~/Downloads$ After installing it shows following output when i run uname -a in a terminal welcome@HP:~$ uname -a Linux HP 4.18.0-041800rc6-generic #201807221830 SMP Sun Jul 22 22:33:11 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux