Hi!
I updated the system today using garuda-update, so zen-kernel upgraded from 6.4.** to 6.5.3 and now my screen resolution on 1920x1200 looks like this: https://snipboard.io/GtMDcu.jpg (sorry for the link to screenshot - I really can’t explain this stuff, seems resolution scaling is totally corrupted).
If I’m changing resolution to 2560x1600 - it’s looks normal, but it is way too small and if I’m trying to scale it to 125% or more - symbol rendering looks awful, can’t read it without blood out my eyes. 
I’m running Lenovo laptop with full AMD hardware, and at first I thought that it is problem caused by AMD drivers. I reverted back to snaphot and added mesa drivers to ignorepkg, then performed a full update again. Still I have this problem with resolution.
Then I tested wayland session and the resolution problem was absolutely the same.
After that I decided to try the LTS kernel 6.1.53-1-lts and I was able to switch my resolution to 1920x1200 without any problems.
Here is my xrandr output (it is the same for both kernels - zen and LTS):
Screen 0: minimum 320 x 200, current 2560 x 1600, maximum 16384 x 16384
eDP connected primary 2560x1600+0+0 (normal left inverted right x axis y axis) 344mm x 215mm
2560x1600 165.00*+ 60.00 + 120.03 96.03 72.00 60.00
1920x1200 165.00
1920x1080 165.00
1600x1200 165.00
1680x1050 165.00
1280x1024 165.00
1440x900 165.00
1280x800 165.00
1280x720 165.00
1024x768 165.00
800x600 165.00
640x480 165.00
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-2 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-3 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-4 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-5 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-6 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-7 disconnected (normal left inverted right x axis y axis)
Here is my garuda-inxi on LTS kernel:
System:
Kernel: 6.1.53-1-lts arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
clocksource: tsc available: hpet,acpi_pm
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-lts
root=UUID=a39d3c31-81a4-4ae9-ab96-46dcc08fd8c8 rw rootflags=subvol=@
quiet quiet rd.udev.log_priority=3 vt.global_cursor_default=0 loglevel=3
ibt=off
Desktop: KDE Plasma v: 5.27.8 tk: Qt v: 5.15.10 wm: kwin_x11 vt: 2
dm: SDDM Distro: Garuda Linux base: Arch Linux
Machine:
Type: Laptop System: LENOVO product: 82UH v: Legion 7 16ARHA7
serial: <superuser required> Chassis: type: 10 v: Legion 7 16ARHA7
serial: <superuser required>
Mobo: LENOVO model: LNVNB161216 v: NO DPK serial: <superuser required>
UEFI: LENOVO v: K9CN34WW date: 07/22/2022
Battery:
ID-1: BAT0 charge: 101.8 Wh (100.0%) condition: 101.8/99.9 Wh (101.9%)
volts: 17.3 min: 15.5 model: Celxpert L21C4PC2 type: Li-poly
serial: <filter> status: full cycles: 8
CPU:
Info: model: AMD Ryzen 9 6900HX with Radeon Graphics bits: 64 type: MT MCP
arch: Zen 3+ gen: 4 level: v3 note: check built: 2022 process: TSMC n6 (7nm)
family: 0x19 (25) model-id: 0x44 (68) stepping: 1 microcode: 0xA404102
Topology: cpus: 1x cores: 8 tpc: 2 threads: 16 smt: enabled cache:
L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 4 MiB desc: 8x512 KiB
L3: 16 MiB desc: 1x16 MiB
Speed (MHz): avg: 1619 high: 3300 min/max: 1600/4934 boost: enabled
scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 1719 2: 3300
3: 1357 4: 1455 5: 1600 6: 1600 7: 1337 8: 1600 9: 1594 10: 1600 11: 1362
12: 1503 13: 1358 14: 1600 15: 1463 16: 1462 bogomips: 105453
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Vulnerabilities: <filter>
Graphics:
Device-1: AMD Navi 22 [Radeon RX 6700/6700 XT/6750 XT / 6800M/6850M XT]
vendor: Lenovo driver: amdgpu v: kernel arch: RDNA-2 code: Navi-2x
process: TSMC n7 (7nm) built: 2020-22 pcie: gen: 4 speed: 16 GT/s
lanes: 16 ports: active: eDP-1 empty: DP-1,DP-2,HDMI-A-1 bus-ID: 03:00.0
chip-ID: 1002:73df class-ID: 0300
Device-2: AMD Rembrandt [Radeon 680M] vendor: Lenovo driver: amdgpu
v: kernel arch: RDNA-2 code: Navi-2x process: TSMC n7 (7nm) built: 2020-22
pcie: gen: 4 speed: 16 GT/s lanes: 16 ports: active: none empty: DP-3,
DP-4, DP-5, DP-6, DP-7, DP-8 bus-ID: 37:00.0 chip-ID: 1002:1681
class-ID: 0300 temp: 39.0 C
Display: x11 server: X.Org v: 21.1.8 with: Xwayland v: 23.2.0
compositor: kwin_x11 driver: X: loaded: amdgpu unloaded: modesetting,radeon
alternate: fbdev,vesa dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1200 s-dpi: 96 s-size: 507x317mm (19.96x12.48")
s-diag: 598mm (23.54")
Monitor-1: eDP-1 mapped: eDP model: BOE Display 0x0a9b built: 2020
res: 1920x1200 hz: 165 dpi: 142 gamma: 1.2 size: 344x215mm (13.54x8.46")
diag: 406mm (16") ratio: 16:10 modes: max: 2560x1600 min: 640x480
API: OpenGL v: 4.6 Mesa 23.1.7-arch1.1 renderer: AMD Radeon RX 6800M
(navi22 LLVM 16.0.6 DRM 3.49 6.1.53-1-lts) direct-render: Yes
Audio:
Device-1: AMD Navi 21/23 HDMI/DP Audio driver: snd_hda_intel v: kernel pcie:
gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 03:00.1 chip-ID: 1002:ab28
class-ID: 0403
Device-2: AMD Rembrandt Radeon High Definition Audio vendor: Lenovo
driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16
bus-ID: 37:00.1 chip-ID: 1002:1640 class-ID: 0403
Device-3: AMD Family 17h/19h HD Audio vendor: Lenovo driver: snd_hda_intel
v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 37:00.6
chip-ID: 1022:15e3 class-ID: 0403
Device-4: JMTek LLC. USB PnP Audio Device
driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 1.1 speed: 12 Mb/s
lanes: 1 mode: 1.1 bus-ID: 3-2.2:5 chip-ID: 0c76:161f class-ID: 0300
API: ALSA v: k6.1.53-1-lts status: kernel-api tools: N/A
Server-1: PipeWire v: 0.3.80 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: Lenovo driver: mt7921e v: kernel pcie: gen: 2 speed: 5 GT/s lanes: 1
bus-ID: 05:00.0 chip-ID: 14c3:0616 class-ID: 0280
IF: wlp5s0 state: up mac: <filter>
Device-2: Realtek RTL8125 2.5GbE vendor: Lenovo driver: r8169 v: kernel
pcie: gen: 2 speed: 5 GT/s lanes: 1 port: 4000 bus-ID: 06:00.0
chip-ID: 10ec:8125 class-ID: 0200
IF: enp6s0 state: down mac: <filter>
Bluetooth:
Device-1: Foxconn / Hon Hai Wireless_Device driver: btusb v: 0.8 type: USB
rev: 2.1 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-3:3 chip-ID: 0489:e0d8
class-ID: e001 serial: <filter>
Report: btmgmt ID: hci0 rfk-id: 2 state: down bt-service: enabled,running
rfk-block: hardware: no software: no address: <filter> bt-v: 5.2 lmp-v: 11
status: discoverable: no pairing: no
Drives:
Local Storage: total: 3.66 TiB used: 703.21 GiB (18.8%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 maj-min: 259:3 vendor: Samsung
model: SSD 970 EVO Plus 2TB size: 1.82 TiB block-size: physical: 512 B
logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
fw-rev: 2B2QEXM7 temp: 41.9 C scheme: GPT
ID-2: /dev/nvme1n1 maj-min: 259:0 vendor: Samsung
model: MZVL21T0HCLR-00BL2 size: 953.87 GiB block-size: physical: 512 B
logical: 512 B speed: 63.2 Gb/s lanes: 4 tech: SSD serial: <filter>
fw-rev: CL1QGXA7 temp: 41.9 C scheme: GPT
ID-3: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ01ABD100
size: 931.51 GiB block-size: physical: 512 B logical: 512 B type: USB
rev: 3.0 spd: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1 tech: HDD rpm: 5400
serial: <filter> fw-rev: 0404 scheme: GPT
Partition:
ID-1: / raw-size: 953.57 GiB size: 953.57 GiB (100.00%)
used: 703.16 GiB (73.7%) fs: btrfs dev: /dev/nvme1n1p2 maj-min: 259:2
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 57.9 MiB (19.3%) fs: vfat dev: /dev/nvme1n1p1 maj-min: 259:1
ID-3: /home raw-size: 953.57 GiB size: 953.57 GiB (100.00%)
used: 703.16 GiB (73.7%) fs: btrfs dev: /dev/nvme1n1p2 maj-min: 259:2
ID-4: /var/log raw-size: 953.57 GiB size: 953.57 GiB (100.00%)
used: 703.16 GiB (73.7%) fs: btrfs dev: /dev/nvme1n1p2 maj-min: 259:2
ID-5: /var/tmp raw-size: 953.57 GiB size: 953.57 GiB (100.00%)
used: 703.16 GiB (73.7%) fs: btrfs dev: /dev/nvme1n1p2 maj-min: 259:2
Swap:
Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default) zswap: no
ID-1: swap-1 type: zram size: 30.55 GiB used: 0 KiB (0.0%) priority: 100
comp: zstd avail: lzo,lzo-rle,lz4,lz4hc,842 max-streams: 16 dev: /dev/zram0
Sensors:
System Temperatures: cpu: 45.4 C mobo: N/A
Fan Speeds (rpm): N/A
GPU: device: amdgpu temp: 41.0 C mem: 40.0 C fan: 0 watts: 11.00
device: amdgpu temp: 41.0 C
Info:
Processes: 380 Uptime: 8m wakeups: 2 Memory: total: 32 GiB note: est.
available: 30.55 GiB used: 3.06 GiB (10.0%) Init: systemd v: 254
default: graphical tool: systemctl Compilers: gcc: 13.2.1 Packages: 1350
pm: pacman pkgs: 1331 libs: 353 tools: octopi,paru pm: flatpak pkgs: 19
Shell: fish v: 3.6.1 default: Bash v: 5.1.16 running-in: konsole
inxi: 3.3.29
Garuda (2.6.16-1):
System install date: 2023-09-03
Last full system update: 2023-09-20
Is partially upgraded: No
Relevant software: snapper NetworkManager dracut
Windows dual boot: Probably (Run as root to verify)
Failed units:
So I guess it is the zen-kernel problem, isn’t it? Should I write a bug-report or something?