No display after switching from nvidia to radeon rx 6800

After I switched my graphics card from nvidia 1660 ti to radeon rx 6800 I cannot get into manjaro. The grub works but when I boot into manjaro the displays don-t get any signal. So I cannot even get into terminal with ctr+alt+F2.
I can chroot into my system from live usb.

inxi --admin --verbosity=7 --filter --no-host --width
12System:
  12Kernel 5.15.32-1-MANJARO 12arch x86_64 12bits 64 12compiler gcc 12v 11.2.0
    12parameters BOOT_IMAGE=/boot/vmlinuz-x86_64 lang=en_US keytable=us tz=UTC
    misobasedir=manjaro misolabel=MANJARO_XFCE_2126 quiet
    systemd.show_status=1 apparmor=1 security=apparmor driver=free
    nouveau.modeset=1 i915.modeset=1 radeon.modeset=1
  12Desktop Xfce 12v 4.16.0 12tk Gtk 12v 3.24.29 12info xfce4-panel 12wm xfwm 12v 4.16.1
    12dm N/A 12Distro Manjaro Linux 12base Arch Linux
12Machine:
  12Type Desktop 12System Gigabyte 12product H270-HD3 12v N/A 12serial N/A
  12Mobo Gigabyte 12model H270-HD3-CF 12v x.x 12serial N/A
    12UEFI-[Legacy] American Megatrends 12v F1 12date 11/22/2016
12Battery:
  12Message No system battery data found. Is one present?
12Memory:
  12RAM 12total 31.31 GiB 12used 2.75 GiB (8.8%)
  12Array-1 12capacity 64 GiB 12slots 4 12EC None 12max-module-size 16 GiB 12note est.
  12Device-1 ChannelA-DIMM0 12type DDR4 12detail synchronous 12size 8 GiB
    12speed 2400 MT/s 12volts 12curr 1.2 12min 1.2 12max 1.2 12width (bits) 12data 64 12total 64
    12manufacturer Kingston 12part-no KHX2400C15D4/8G 12serial <filter>
  12Device-2 ChannelA-DIMM1 12type DDR4 12detail synchronous 12size 8 GiB
    12speed 2400 MT/s 12volts 12curr 1.2 12min 1.2 12max 1.2 12width (bits) 12data 64 12total 64
    12manufacturer Kingston 12part-no KHX2400C15D4/8G 12serial <filter>
  12Device-3 ChannelB-DIMM0 12type DDR4 12detail synchronous 12size 8 GiB 12speed
    12spec 2667 MT/s 12actual 2400 MT/s 12volts 12curr 1.2 12min 1.2 12max 1.2 12width (bits)
    12data 64 12total 64 12manufacturer 86D3 12part-no N/A 12serial N/A
  12Device-4 ChannelB-DIMM1 12type DDR4 12detail synchronous 12size 8 GiB 12speed
    12spec 2667 MT/s 12actual 2400 MT/s 12volts 12curr 1.2 12min 1.2 12max 1.2 12width (bits)
    12data 64 12total 64 12manufacturer 86D3 12part-no N/A 12serial N/A
12CPU:
  12Info 12model Intel Core i7-7700 12socket U3E1 12bits 64 12type MT MCP 12arch Kaby Lake
    12family 6 12model-id 0x9E (158) 12stepping 9 12microcode 0xEC
  12Topology 12cpus 1x 12cores 4 12tpc 2 12threads 8 12smt enabled 12cache 12L1 256 KiB
    12desc d-4x32 KiB; i-4x32 KiB 12L2 1024 KiB 12desc 4x256 KiB 12L3 8 MiB 12desc 1x8 MiB
  12Speed (MHz) 12avg 800 12min/max 800/4200 12base/boost 4000/8300 12scaling
    12driver intel_pstate 12governor powersave 12volts 1.1 V 12ext-clock 100 MHz 12cores
    121 800 122 800 123 800 124 800 125 800 126 800 127 800 128 800 12bogomips 57616
  12Flags 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush clflushopt
    cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts
    ept ept_ad erms est f16c flexpriority flush_l1d fma fpu fsgsbase fxsr ht
    hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid
    invpcid_single lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr mtrr
    nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln
    pni popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep smap
    smep smx ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2
    tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic
    xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  12Vulnerabilities
  12Type itlb_multihit 12status KVM: VMX disabled
  12Type l1tf
    12mitigation PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  12Type mds 12mitigation Clear CPU buffers; SMT vulnerable
  12Type meltdown 12mitigation PTI
  12Type spec_store_bypass
    12mitigation Speculative Store Bypass disabled via prctl and seccomp
  12Type spectre_v1
    12mitigation usercopy/swapgs barriers and __user pointer sanitization
  12Type spectre_v2 12mitigation Retpolines, IBPB: conditional, IBRS_FW, STIBP:
    conditional, RSB filling
  12Type srbds 12mitigation Microcode
  12Type tsx_async_abort 12mitigation TSX disabled
12Graphics:
  12Device-1 AMD Navi 21 [Radeon RX 6800/6800 XT / 6900 XT] 12vendor ASUSTeK
    12driver amdgpu 12v kernel 12pcie 12gen 4 12speed 16 GT/s 12lanes 16 12ports
    12active DP-1,DP-3 12empty DP-2,HDMI-A-1 12bus-ID 03:00.0 12chip-ID 1002:73bf
    12class-ID 0300
  12Display 12server X.Org 12v 1.21.1.3 12compositor xfwm 12v 4.16.1 12driver 12X
    12loaded amdgpu 12unloaded modesetting,radeon 12alternate fbdev,vesa 12gpu amdgpu
    12display-ID :0.0 12screens 1
  12Screen-1 0 12s-res 3840x1080 12s-dpi 96 12s-size 1016x285mm (40.00x11.22")
    12s-diag 1055mm (41.54")
  12Monitor-1 DP-1 12mapped DisplayPort-0 12pos primary,left 12model Dell S2721HS
    12serial <filter> 12built 2021 12res 1920x1080 12hz 60 12dpi 82 12gamma 1.2
    12size 598x336mm (23.54x13.23") 12diag 686mm (27") 12ratio 16:9 12modes
    12max 1920x1080 12min 720x400
  12Monitor-2 DP-3 12mapped DisplayPort-2 12pos right 12model Dell S2721HS
    12serial <filter> 12built 2021 12res 1920x1080 12hz 60 12dpi 82 12gamma 1.2
    12size 598x336mm (23.54x13.23") 12diag 686mm (27") 12ratio 16:9 12modes
    12max 1920x1080 12min 720x400
  12OpenGL 12renderer AMD Radeon RX 6800 (SIENNA_CICHLID DRM 3.42.0
    5.15.32-1-MANJARO LLVM 13.0.1)
    12v 4.6 Mesa 21.3.8 12direct render Yes
12Audio:
  12Device-1 Intel 200 Series PCH HD Audio 12vendor Gigabyte 12driver snd_hda_intel
    12v kernel 12bus-ID 00:1f.3 12chip-ID 8086:a2f0 12class-ID 0403
  12Device-2 AMD Navi 21 HDMI Audio [Radeon RX 6800/6800 XT / 6900 XT]
    12driver snd_hda_intel 12v kernel 12pcie 12gen 4 12speed 16 GT/s 12lanes 16
    12bus-ID 03:00.1 12chip-ID 1002:ab28 12class-ID 0403
  12Sound Server-1 ALSA 12v k5.15.32-1-MANJARO 12running yes
  12Sound Server-2 sndio 12v N/A 12running no
  12Sound Server-3 JACK 12v 1.9.20 12running no
  12Sound Server-4 PulseAudio 12v 15.0 12running yes
  12Sound Server-5 PipeWire 12v 0.3.49 12running yes
12Network:
  12Device-1 Intel Ethernet I219-V 12vendor Gigabyte 12driver e1000e 12v kernel
    12port N/A 12bus-ID 00:1f.6 12chip-ID 8086:15b8 12class-ID 0200
  12IF enp0s31f6 12state up 12speed 1000 Mbps 12duplex full 12mac <filter>
  12IP v4 <filter> 12type dynamic noprefixroute 12scope global 12broadcast <filter>
  12IP v6 <filter> 12type noprefixroute 12scope link
  12WAN IP <filter>
12Bluetooth:
  12Message No bluetooth data found.
12Logical:
  12Message No logical block device data found.
12RAID:
  12Message No RAID data found.
12Drives:
  12Local Storage 12total 1.94 TiB 12used 773.12 GiB (39.0%)
  12SMART Message Required tool smartctl not installed. Check --recommends
  12ID-1 /dev/sda 12maj-min 8:0 12vendor Western Digital 12model WD10EZEX-22MFCA0
    12size 931.51 GiB 12block-size 12physical 4096 B 12logical 512 B 12speed 6.0 Gb/s
    12type N/A 12serial <filter> 12rev 1A01
  12ID-2 /dev/sdb 12maj-min 8:16 12vendor Kingston 12model SUV400S37120G
    12size 111.79 GiB 12block-size 12physical 4096 B 12logical 512 B 12speed 6.0 Gb/s
    12type N/A 12serial <filter> 12rev 96R9
  12ID-3 /dev/sdc 12maj-min 8:32 12vendor Seagate 12model ST1000DM003-1SB10C
    12size 931.51 GiB 12block-size 12physical 4096 B 12logical 512 B 12speed 6.0 Gb/s
    12type N/A 12serial <filter> 12rev CC43
  12ID-4 /dev/sdd 12maj-min 8:48 12type USB 12vendor Kingston 12model DataTraveler 3.0
    12size 7.2 GiB 12block-size 12physical 512 B 12logical 512 B 12type N/A
    12serial <filter>
  12Message No optical or floppy data found.
12Partition:
  12ID-1 / 12raw-size 95.18 GiB 12size 93.18 GiB (97.90%) 12used 39.1 GiB (42.0%)
    12fs ext4 12block-size 4096 B 12dev /dev/sdc1 12maj-min 8:33 12label N/A
    12uuid f69b345c-84e7-45f7-b9f2-6f2463aeb4dc
  12ID-2 /home 12raw-size 830.93 GiB 12size 816.89 GiB (98.31%)
    12used 734.02 GiB (89.9%) 12fs ext4 12block-size 4096 B 12dev /dev/sdc3 12maj-min 8:35
    12label N/A 12uuid 2aeab2c0-52ef-4db3-8b16-37ee1ccb3ca1
12Swap:
  12Alert No swap data was found.
12Unmounted:
  12ID-1 /dev/sda1 12maj-min 8:1 12size 931.51 GiB 12fs ntfs 12label New Volume
    12uuid 9802EE5B02EE3DBE
  12ID-2 /dev/sdb1 12maj-min 8:17 12size 500 MiB 12fs ntfs 12label System Reserved
    12uuid B646D84046D80353
  12ID-3 /dev/sdb2 12maj-min 8:18 12size 110.79 GiB 12fs ntfs 12label N/A
    12uuid FE02EB7202EB2E79
  12ID-4 /dev/sdb3 12maj-min 8:19 12size 518 MiB 12fs ntfs 12label N/A
    12uuid 6A48670E4866D7F9
  12ID-5 /dev/sdc2 12maj-min 8:34 12size 5.4 GiB 12fs swap 12label N/A
    12uuid 0ffee3f7-0e1c-4d87-8824-7e221747c877
  12ID-6 /dev/sdd1 12maj-min 8:49 12size 3.31 GiB 12fs N/A 12label MANJARO_XFCE_2126
    12uuid 2022-04-16-05-49-46-00
  12ID-7 /dev/sdd2 12maj-min 8:50 12size 4 MiB 12fs N/A 12label MISO_EFI
    12uuid 259E-7B2C
12USB:
  12Hub-1 1-0:1 12info Hi-speed hub with single TT 12ports 16 12rev 2.0 12speed 480 Mb/s
    12chip-ID 1d6b:0002 12class-ID 0900
  12Device-1 1-5:2 12info Logitech F310 Gamepad [XInput Mode]
    12type <vendor specific> 12driver xpad 12interfaces 1 12rev 2.0 12speed 12 Mb/s
    12power 500mA 12chip-ID 046d:c21d 12class-ID ff00 12serial <filter>
  12Device-2 1-9:3 12info Razer USA Viper (wired) 12type Mouse,Keyboard
    12driver hid-generic,usbhid 12interfaces 3 12rev 2.0 12speed 12 Mb/s 12power 100mA
    12chip-ID 1532:0078 12class-ID 0301
  12Device-3 1-10:4 12info Razer USA BlackWidow Ultimate 2016
    12type Keyboard,Mouse 12driver hid-generic,usbhid 12interfaces 3 12rev 2.0
    12speed 12 Mb/s 12power 500mA 12chip-ID 1532:0214 12class-ID 0300
  12Hub-2 2-0:1 12info Super-speed hub 12ports 8 12rev 3.0 12speed 5 Gb/s
    12chip-ID 1d6b:0003 12class-ID 0900
  12Device-1 2-6:2 12info Kingston DataTraveler 100 G3/G4/SE9 G2/50
    12type Mass Storage 12driver usb-storage 12interfaces 1 12rev 3.1 12speed 5 Gb/s
    12power 296mA 12chip-ID 0951:1666 12class-ID 0806 12serial <filter>
12Sensors:
  12System Temperatures 12cpu 29.8 C 12mobo 27.8 C 12gpu amdgpu 12temp 31.0 C 12mem 30.0 C
  12Fan Speeds (RPM) N/A 12gpu amdgpu 12fan 0
12Info:
  12Processes 273 12Uptime 15m 12wakeups 0 12Init systemd 12v 250 12tool systemctl
  12Compilers 12gcc 11.2.0 12clang 13.0.1 12Packages 12pacman 1502 12lib 468 12flatpak 0
  12Client Unknown Client: systemd 12inxi 3.3.15

mhwd -li
> Installed PCI configs:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
           video-linux            2018.05.04                true            PCI


Warning: No installed USB configs!

I have tried mhwd -a pci nonfree 0300 and adding MODULES=(amdgpu radeon) to mkinitcpio.conf.
Nothing works. The only solutions found on this forum were to reinstall manjaro, but this is not an option for me and I cannot switch PCI port because I do not have space.
Please some help. I am a casual manjaro user, normally everything works with no issue, so I cannot follow the Arch documentation.

I have also updated the system sudo pacman -Syyu and tried removing and installing drivers with this documentation Configure Graphics Cards - Manjaro but maybe I did something wrong.

Did you try other keys than f2, f1 to f6 to get into tty… If it doesnt work, use chroot from live manjaro usb, uninstall video drivers, install them again, update grub, update mkinitcpio, exit chroot, reboot

Yes I’ve tried all of that… as I wrote in the post and nothing worked for me.

This seems a bit “off” to me.

[/quote]

This seems a bit “off” to me.
[/quote]
Maybe, I don’t know, as I said, I am casual manjaro user. So I don’t know how to fix such things and I need more help

Those kernel parameters did not get there by some force of magic. Try removing them, assuming you no longer have Nvidia and Intel graphics cards. Then update Grub and reboot.

OK… but how? I’ve pressed E in GRUB and there was none of those parameters and not in /etc/default/grub. Can you please help me a bit more

those parameters are probably in the live usb session… post output from mhwd -l

1 Like

mhwd -l
[manjaro /]# mhwd -l

0000:03:00.0 (0300:1002:73bf) Display controller ATI Technologies Inc:


              NAME               VERSION          FREEDRIVER           TYPE

       video-linux            2018.05.04                true            PCI
 video-modesetting            2020.01.13                true            PCI
        video-vesa            2017.03.12                true            PCI

I have added to /etc/default/grub nomodset and nouveau.modeset=0

GRUB_CMDLINE_LINUX_DEFAULT="quiet apparmor=1 security=apparmor resume=UUID=0ffee3f7-0e1c-4d87-8824-7e221747c877 udev.log_priority=3 nomodset"
GRUB_CMDLINE_LINUX="nouveau.modeset=0"

Now I can get to the console. I am getting Failed to start Light Display Manager
Tried to set logind-check-graphical=true but still not working

so youre now in the tty? … so post output again of mhwd -li

cannot, after reboot it’s the same as before no signal to the displays

but you write above that youre in console and are getting Failed to start Light Display Manager

yes… but after setting logind-check-graphical=true I cannot anymore. Removed the line but didn’t help

so boot into live usb of manjaro and run this command: sudo manjaro-chroot -a - then post the output from mhwd -li also from mhwd-kernel -li

mhwd -li

[manjaro /]# mhwd -li
> Installed PCI configs:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
           video-linux            2018.05.04                true            PCI


Warning: No installed USB configs!

mhwd-kernel -li

[manjaro /]# mhwd-kernel -li
Currently running: 5.15.32-1-MANJARO (linux515)
The following kernels are installed in your system:
   * linux414
   * linux510
   * linux54
   * linux59

All the posts are when I am chrooted from live usb

so first navigate to /etc/X11/ and remove any nvidia entries if they are there, then remove from the modules the ‘amdgpu radeon’,
then uninstall old/eol kernels:
mhwd-kernel -r linux59
mhwd-kernel -r linux414
now uninstall graphics:
mhwd -r pci video-linux
uninstall lightdm:
pacman -R lightdm
install graphics:
mhwd -i pci video-linux
install light dm:
pacman -S lightdm
run these:
update-grub
mkinitcpio -P
exit
systemctl reboot

I cannot remove. Getting breaks dependency

[manjaro /]# mhwd -r pci video-linux
> Removing video-linux...
Sourcing /etc/mhwd-x86_64.conf
Has lib32 support: true
Sourcing /var/lib/mhwd/local/pci/video-linux/MHWDCONFIG
Processing classid: 0300
Sourcing /var/lib/mhwd/scripts/include/0300
Processing classid: 0380
Processing classid: 0302
checking dependencies...
error: failed to prepare transaction (could not satisfy dependencies)
:: removing xf86-video-amdgpu breaks dependency 'xf86-video-amdgpu' required by amdgpu-experimental
Error: pacman failed!
Error: script failed!

so remove it with:
pacman -R amdgpu-experimental
proceed with uninstalling video driver and the rest of commands

The only thing I couldnt do is
pacman -R lightdm

because of dependencies.
Still the same issue. No display.

then you should not continue and posted the errors from lightdm, we need to probably uninstall more lightdm packages…
did you try booting into tty