ASUS Vivobook TP420IA boots to black screen

[megavolt]

Hello

@Sokar

And at first, it worked fine, but a few reboots, now it always stops at a black screen.

So the question would be: What have been changed?

I see some problems with ACPI:

Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\SMIB], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Warning: NsLookup: Type mismatch on SMIB (Integer), searching for (RegionField) (20200528/nsaccess-697)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.VER1], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CCI0], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CCI1], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CCI2], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CCI3], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL0], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL1], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL2], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL3], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL4], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL5], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL6], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.CTL7], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI0], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI1], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI2], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI3], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI4], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI5], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI6], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI7], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI8], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGI9], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGIA], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGIB], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGIC], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGID], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGIE], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGIF], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO0], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO1], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO2], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO3], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO4], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO5], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO6], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO7], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO8], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGO9], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOA], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOB], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOC], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOD], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOE], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0.MGOF], AE_ALREADY_EXISTS (20200528/dsfield-637)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Failure creating named object [\_SB.PCI0.SBRG.EC0._Q50], AE_ALREADY_EXISTS (20200528/dswload2-326)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20200528/psobject-220)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI: Skipping parse of AML opcode: Method (0x0014)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI: 15 ACPI AML tables successfully acquired and loaded
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[...]
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: battery: ACPI: Battery Slot [BATT] (battery present)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.M318.M31B], AE_NOT_FOUND (20200528/psargs-330)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Error: Aborting method \_SB.UBTC.M318 due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Error: Aborting method \_SB.UBTC._DSM due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ucsi_acpi USBC000:00: ucsi_acpi_dsm: failed to evaluate _DSM 2
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ucsi_acpi: probe of USBC000:00 failed with error -5
[...]
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: battery: ACPI: Battery Slot [BATT] (battery present)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.M318.M31B], AE_NOT_FOUND (20200528/psargs-330)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Error: Aborting method \_SB.UBTC.M318 due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ACPI Error: Aborting method \_SB.UBTC._DSM due to previous error (AE_NOT_FOUND) (20200528/psparse-529)
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ucsi_acpi USBC000:00: ucsi_acpi_dsm: failed to evaluate _DSM 2
Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: ucsi_acpi: probe of USBC000:00 failed with error -5

That should be solved first. Have look here:

How to Choose the Proper ACPI Kernel Argument

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Then there is an issue with lightdm:

Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.
Okt 13 00:07:24 skr-ultrabook-lnx64 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=lightdm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Okt 13 00:07:24 skr-ultrabook-lnx64 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=lightdm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: Stopped Light Display Manager.
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: lightdm.service: Start request repeated too quickly.
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: Failed to start Light Display Manager.

After 5 times trying to start, it stopped.

Then there is a problem with the backlight control:

Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0...
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0...
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd-backlight[1036]: Failed to get backlight or LED device 'backlight:acpi_video0': No such device
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd-backlight[1037]: amdgpu_bl0: Failed to write system 'brightness' attribute: No such device or address
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: systemd-backlight@backlight:acpi_video0.service: Main process exited, code=exited, status=1/FAILURE
Okt 13 00:07:24 skr-ultrabook-lnx64 systemd[1]: systemd-backlight@backlight:acpi_video0.service: Failed with result 'exit-code'.
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: ------------[ cut here ]------------
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: WARNING: CPU: 5 PID: 1037 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2546 dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: Modules linked in: cmac algif_hash algif_skcipher af_alg hid_logitech_dj(+) bnep uvcvideo btusb btrtl videobuf2_vmalloc btbcm videobuf2_memops videobuf2_v4l2 btintel videobuf2_common bluetooth videodev ecdh_generic ecc mc usbhid mousedev joydev hid_multitouch snd_acp3x_pdm_dma snd_acp3x_rn snd_soc_dmic hid_generic snd_soc_core asus_nb_wmi asus_wmi wmi_bmof sparse_keymap snd_compress ac97_bus snd_pcm_dmaengine edac_mce_amd kvm_amd squashfs kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel amdgpu crypto_simd cryptd glue_helper rapl input_leds pcspkr loop iwlmvm mac80211 snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio libarc4 snd_hda_codec_hdmi nls_iso8859_1 gpu_sched nls_cp437 snd_hda_intel snd_intel_dspcfg i2c_algo_bit vfat iwlwifi fat ttm snd_hda_codec snd_hda_core sp5100_tco snd_hwdep k10temp cfg80211 i2c_piix4 drm_kms_helper snd_pcm cec snd_timer rc_core snd_rn_pci_acp3x snd ucsi_acpi syscopyarea tpm_crb snd_pci_acp3x sysfillrect ccp
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  typec_ucsi sysimgblt tpm_tis fb_sys_fops soundcore tpm_tis_core rfkill wmi typec evdev ac battery mac_hid i2c_hid tpm rng_core pinctrl_amd hid cm32181 industrialio acpi_cpufreq drm uinput crypto_user agpgart ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 serio_raw atkbd libps2 crc32c_intel xhci_pci xhci_pci_renesas xhci_hcd i8042 serio
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: CPU: 5 PID: 1037 Comm: systemd-backlig Not tainted 5.8.11-1-MANJARO #1
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: Hardware name: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop TP420IA_TM420IA/TP420IA, BIOS TP420IA.209 06/05/2020
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RIP: 0010:dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: Code: 30 03 00 00 31 c0 48 8d 96 c0 01 00 00 48 8b 0a 48 85 c9 74 06 48 3b 59 08 74 20 83 c0 01 48 81 c2 c8 04 00 00 83 f8 06 75 e3 <0f> 0b 45 31 e4 5b 44 89 e0 5d 41 5c 41 5d 41 5e c3 48 98 48 69 c0
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RSP: 0018:ffffa52fc0fbfdf0 EFLAGS: 00010246
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RAX: 0000000000000006 RBX: ffff9ee639d77000 RCX: 0000000000000000
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RDX: ffff9ee61a021e70 RSI: ffff9ee61a020000 RDI: 0000000000000000
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RBP: ffff9ee61fbf0000 R08: 00000000000000ff R09: 000000000000000a
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: R10: 000000000000000a R11: f000000000000000 R12: 000000000000ff01
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: R13: 0000000000000000 R14: 000000000000ffff R15: ffff9ee6210dd160
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: FS:  00007f0d7fc8a000(0000) GS:ffff9ee63f540000(0000) knlGS:0000000000000000
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: CR2: 00005607e80c5978 CR3: 00000003e8fda000 CR4: 0000000000340ee0
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: Call Trace:
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  amdgpu_dm_backlight_update_status+0xb4/0xc0 [amdgpu]
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  backlight_device_set_brightness+0x7e/0x130
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  brightness_store+0x63/0x80
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  kernfs_fop_write+0xce/0x1b0
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  vfs_write+0xc7/0x1f0
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  ksys_write+0x67/0xe0
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  do_syscall_64+0x44/0x70
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RIP: 0033:0x7f0d80aa4f67
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RSP: 002b:00007ffcc8412c08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f0d80aa4f67
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RDX: 0000000000000004 RSI: 00007ffcc8412cf0 RDI: 0000000000000004
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: RBP: 00007ffcc8412cf0 R08: 0000000000000000 R09: 0000000000000000
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: R13: 00005607e80af3c0 R14: 0000000000000004 R15: 00007f0d80b77720
Okt 13 00:07:24 skr-ultrabook-lnx64 kernel: ---[ end trace 8297b35ae8304bca ]---

The ACPI issue could be solved with an UEFI upgrade:

Okt 13 00:07:22 skr-ultrabook-lnx64 kernel: DMI: ASUSTeK COMPUTER INC. VivoBook_ASUSLaptop TP420IA_TM420IA/TP420IA, BIOS TP420IA.209 06/05/2020

Latest Version: 2020/07/06
Your Version: 2020/05/06

Vivobook Flip 14 TM420｜Laptops For Home｜ASUS Global

Maybe try also to completely disable the legacy BIOS mode, so run it in full UEFI mode.

Have also look at:
https://wiki.archlinux.org/index.php/AMDGPU#Enable_Southern_Islands_(SI)and_Sea_Islands(CIK)_support