[BUG] linux-cachyos 7.2.4-1 freezes Plasma/Wayland on RX 9070 XT; 7.2.3-1 and LTS work

### Pre-flight checklist

- [x] I have searched existing issues and this is not a duplicate.
- [x] I have read the [Contributing Guidelines](https://github.com/CachyOS/linux-cachyos/blob/master/CONTRIBUTING.md).
- [x] I have verified the issue is reproducible with the latest available CachyOS kernel.
- [x] I have tried to reproduce the issue on Arch Linux's `linux` kernel.

### Upstream / vanilla kernel check

I have not tested with a vanilla/upstream kernel

### Kernel variant

linux-cachyos (EEVDF, Clang)

### System information (cachyos-bugreport.sh)

```text
https://paste.cachyos.org/p/86ebd71.log
```

### Manual system information (if cachyos-bugreport.sh is unavailable)

```text
Desktop Environment / Window Manager:
KDE Plasma 6.7.5 / KWin 6.7.5 / Wayland

CPU:
AMD Ryzen 7 7800X3D

GPU / Driver:
AMD Radeon RX 9070 XT / amdgpu / Mesa 26.2.2-2

Motherboard:
ASUS TUF Gaming B650E-PLUS WIFI
```

### Bug description

After upgrading linux-cachyos from 7.2.3-1 to 7.2.4-1, Plasma Login Manager starts normally, but after logging in the Plasma desktop becomes unusable.

The wallpaper and mouse cursor may appear, but keyboard and mouse input inside the desktop stops responding. After a short period, the system reboots.

Booting linux-cachyos-lts 6.18.50-1 works normally.

Downgrading only linux-cachyos and linux-cachyos-headers back to 7.2.3-1 completely fixes the issue.

No other packages or configuration were changed between these tests.

### Steps to reproduce

1. Install/update linux-cachyos and linux-cachyos-headers to 7.2.4-1.
2. Reboot the system.
3. Boot the normal linux-cachyos kernel.
4. Log in through Plasma Login Manager using the Plasma Wayland session.
5. Plasma starts loading, but the desktop becomes unresponsive.
6. After a short period, the system reboots.

Workarounds:
- Booting linux-cachyos-lts 6.18.50-1 works normally.
- Downgrading linux-cachyos and linux-cachyos-headers to 7.2.3-1 also works normally.

### Expected behavior

Plasma Wayland should start normally after logging in, as it does with linux-cachyos 7.2.3-1 and linux-cachyos-lts 6.18.50-1.

The desktop should remain responsive and the system should not reboot.

### Actual behavior

After logging in with linux-cachyos 7.2.4-1, Plasma becomes unresponsive.

The desktop wallpaper and mouse cursor may appear, but keyboard and mouse input inside the Plasma session stop responding. After roughly 2–3 minutes, the system reboots automatically.

The same system works normally when booting linux-cachyos 7.2.3-1 or linux-cachyos-lts 6.18.50-1.

### Logs / stack traces

```text

```

### Additional system information

System:
Kernel: 7.2.3-1-cachyos arch: x86_64 bits: 64 compiler: clang v: 22.1.8
clocksource: tsc
Desktop: KDE Plasma v: 6.7.5 tk: Qt v: N/A wm: kwin_wayland vt: 2 dm: N/A
Distro: CachyOS base: Arch Linux
Machine:
Type: Desktop System: ASUS product: N/A v: N/A serial:
Mobo: ASUSTeK model: TUF GAMING B650E-PLUS WIFI v: Rev 1.xx
serial: part-nu: SKU uuid:
Firmware: UEFI vendor: American Megatrends v: 0311 date: 02/28/2025
CPU:
Info: 8-core model: AMD Ryzen 7 7800X3D bits: 64 type: MT MCP smt: enabled
arch: Zen 4 rev: 2 cache: L1: 512 KiB L2: 8 MiB L3: 96 MiB
Speed (MHz): avg: 2992 min/max: 423/5017 boost: enabled cores: 1: 2992
2: 2992 3: 2992 4: 2992 5: 2992 6: 2992 7: 2992 8: 2992 9: 2992 10: 2992
11: 2992 12: 2992 13: 2992 14: 2992 15: 2992 16: 2992 bogomips: 134400
Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a
ssse3 svm
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 [Radeon RX 9070/9070
XT/9070 GRE] vendor: ASUSTeK driver: amdgpu v: kernel arch: RDNA-4 pcie:
speed: 32 GT/s lanes: 16 ports: active: DP-1 empty: DP-2, DP-3, HDMI-A-1,
Writeback-1 bus-ID: 03:00.0 chip-ID: 1002:7550 class-ID: 0300
Device-2: Advanced Micro Devices [AMD/ATI] Raphael vendor: ASUSTeK
driver: amdgpu v: kernel arch: RDNA-2 pcie: speed: 16 GT/s lanes: 16 ports:
active: none empty: DP-4,HDMI-A-2,Writeback-2 bus-ID: 0e:00.0
chip-ID: 1002:164e class-ID: 0300 temp: 39.0 C
Display: wayland server: Xwayland v: 24.1.13 compositor: kwin_wayland
driver: gpu: amdgpu display-ID: 0
Monitor-1: DP-1 model: Gigabyte GS27QC serial: res:
mode: 2560x1440 hz: 165 scale: 100% (1) dpi: 109
size: 597x336mm (23.5x13.23") diag: 685mm (27") modes: max: 2560x1440
min: 720x400
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: radeonsi device: 2 drv: swrast gbm: drv: radeonsi
surfaceless: drv: radeonsi wayland: drv: radeonsi x11: drv: radeonsi
API: OpenGL v: 4.6 vendor: amd mesa v: 26.2.2-arch3.2 glx-v: 1.4
direct-render: yes renderer: AMD Radeon RX 9070 XT (radeonsi gfx1201 ACO
DRM 3.64 7.2.3-1-cachyos) device-ID: 1002:7550 display-ID: :0.0
API: Vulkan v: 1.4.357 layers: 9 surfaces: N/A device: 0
type: discrete-gpu hw: amd driver: mesa radv device-ID: 1002:7550 device: 1
type: integrated-gpu hw: amd driver: mesa radv device-ID: 1002:164e
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: lact wl: wayland-info
x11: xdpyinfo, xprop, xrandr
Audio:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 HDMI/DP Audio
driver: snd_hda_intel v: kernel pcie: speed: 32 GT/s lanes: 16
bus-ID: 03:00.1 chip-ID: 1002:ab40 class-ID: 0403
Device-2: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
vendor: ASUSTeK driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s
lanes: 16 bus-ID: 0e:00.1 chip-ID: 1002:1640 class-ID: 0403
Device-3: Advanced Micro Devices [AMD] Ryzen HD Audio vendor: ASUSTeK
driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s lanes: 16
bus-ID: 0e:00.6 chip-ID: 1022:15e3 class-ID: 0403
API: ALSA v: k7.2.3-1-cachyos status: kernel-api
Server-1: sndiod v: N/A status: off
Server-2: JACK v: 1.9.22 status: off
Server-3: PipeWire v: 1.6.8 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
Device-1: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel
pcie: speed: 5 GT/s lanes: 1 port: e000 bus-ID: 0a:00.0 chip-ID: 10ec:8125
class-ID: 0200
IF: eno1 state: up speed: 1000 Mbps duplex: full mac:
Device-2: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: Foxconn driver: mt7921e v: kernel pcie: speed: 5 GT/s lanes: 1
bus-ID: 0b:00.0 chip-ID: 14c3:0616 class-ID: 0280
IF: wlan0 state: down mac:
Bluetooth:
Device-1: Foxconn / Hon Hai Wireless_Device driver: btusb v: 0.8 type: USB
rev: 2.1 speed: 480 Mb/s lanes: 1 bus-ID: 1-6:2 chip-ID: 0489:e0e2
class-ID: e001 serial:
Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: enabled,running
rfk-block: hardware: no software: yes address: bt-v: 5.3 lmp-v: 12
Drives:
Local Storage: total: 689.33 GiB used: 314.2 GiB (45.6%)
ID-1: /dev/nvme0n1 vendor: Kingston model: SNVS500G size: 465.76 GiB
speed: 31.6 Gb/s lanes: 4 tech: SSD serial: fw-rev: S8I40100
temp: 25.9 C scheme: GPT
ID-2: /dev/sda vendor: A-Data model: SU630 size: 223.57 GiB
speed: 6.0 Gb/s tech: SSD serial: fw-rev: 1c83 scheme: GPT
Partition:
ID-1: / size: 461.76 GiB used: 313.52 GiB (67.9%) fs: btrfs
dev: /dev/nvme0n1p2
ID-2: /boot size: 3.99 GiB used: 690.2 MiB (16.9%) fs: vfat
dev: /dev/nvme0n1p1
ID-3: /home size: 461.76 GiB used: 313.52 GiB (67.9%) fs: btrfs
dev: /dev/nvme0n1p2
ID-4: /var/log size: 461.76 GiB used: 313.52 GiB (67.9%) fs: btrfs
dev: /dev/nvme0n1p2
ID-5: /var/tmp size: 461.76 GiB used: 313.52 GiB (67.9%) fs: btrfs
dev: /dev/nvme0n1p2
Swap:
ID-1: swap-1 type: zram size: 30.5 GiB used: 2.4 MiB (0.0%) priority: 100
dev: /dev/zram0
Sensors:
System Temperatures: cpu: 33.5 C mobo: 33.0 C
Fan Speeds (rpm): fan-1: 0 fan-2: 852 fan-3: 594 fan-4: 0 fan-5: 0
fan-6: 0 fan-7: 0
GPU: device: amdgpu temp: 39.0 C device: amdgpu temp: 29.0 C mem: 52.0 C
fan: 627 watts: 21.00
Info:
Memory: total: 32 GiB note: est. available: 30.5 GiB used: 3.06 GiB (10.0%)
Processes: 382 Power: uptime: 16m states: freeze,mem,disk suspend: deep
wakeups: 0 hibernate: platform Init: systemd v: 261 default: graphical
Packages: pm: pacman pkgs: 1466 Compilers: clang: 22.1.8 gcc: 16.2.1
Shell: fish v: 4.9.3 running-in: konsole inxi: 3.3.41

~
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