Re: X unstable / integrated graphics chipset
Seb composed on 2025-11-19 10:49 (UTC+0100):
>> Please show I/O from:
>> lsmod | sort | grep -E 'video|radeon|amdgpu'
>
> amdgpu 14450688 2
> amdxcp 12288 1 amdgpu
> crc16 12288 3 bluetooth,amdgpu,ext4
> drm 774144 12
gpu_sched,drm_kms_helper,drm_exec,drm_suballoc_helper,drm_display_helper,drm_buddy,amdgpu,drm_ttm_helper,ttm,amdxcp
> drm_buddy 24576 1 amdgpu
> drm_display_helper 274432 1 amdgpu
> drm_exec 12288 1 amdgpu
> drm_kms_helper 253952 3 drm_display_helper,amdgpu,drm_ttm_helper
> drm_suballoc_helper 12288 1 amdgpu
> drm_ttm_helper 16384 2 amdgpu
> gpu_sched 65536 1 amdgpu
> i2c_algo_bit 16384 1 amdgpu
> ttm 106496 2 amdgpu,drm_ttm_helper
> video 81920 1 amdgpu
> wmi 28672 3 video,gigabyte_wmi,wmi_bmof
>> ls -1 /sys/class/drm # One, not L
> card0@
> card0-DP-1@
> card0-DP-2@
> card0-DP-3@
> card0-DP-4@
> card0-DP-5@
> card0-DP-6@
> card0-HDMI-A-1@
> card0-HDMI-A-2@
> card0-Writeback-1@
> renderD128@
> version
>> inxi -GSaz --za
> System:
> Kernel: 6.12.48+deb13-amd64 arch: x86_64 bits: 64 compiler: gcc v: 14.2.0
> clocksource: tsc avail: hpet,acpi_pm
> parameters: BOOT_IMAGE=/boot/vmlinuz-6.12.48+deb13-amd64
> root=UUID=<filter> ro quiet
> Desktop: FVWM2 v: 2.7.0 tools: xscreensaver,xscreensaver-systemd
> dm: startx Distro: Debian GNU/Linux 13 (trixie)
> Graphics:
> Device-1: Advanced Micro Devices [AMD/ATI] Phoenix1 vendor: Gigabyte
> driver: amdgpu v: kernel arch: RDNA-3 code: Phoenix process: TSMC n4 (4nm)
> built: 2023+ pcie: gen: 4 speed: 16 GT/s lanes: 16 ports: active: HDMI-A-1
> empty: DP-1, DP-2, DP-3, DP-4, DP-5, DP-6, HDMI-A-2, Writeback-1
> bus-ID: 78:00.0 chip-ID: 1002:15bf class-ID: 0300 temp: 28.0 C
> Display: unspecified server: X.Org v: 21.1.16 driver: X: loaded: amdgpu
> unloaded: fbdev,modesetting,radeon,vesa dri: swrast gpu: amdgpu
> display-ID: localhost:10.0 screens: 1
> Screen-1: 0 s-res: 2560x1440 s-dpi: 108 s-size: 602x342mm (23.70x13.46")
> s-diag: 692mm (27.26")
> Monitor-1: HDMI-A-1 mapped: DP-0 model: Idek Iiyama PL2283H
> serial: <filter> built: 2016 res: mode: 2560x1440 hz: 60 scale: 100% (1)
> dpi: 109 gamma: 1.2 size: 597x336mm (23.5x13.23") diag: 576mm (22.7")
> ratio: 15:9 modes: max: 1920x1080 min: 720x400
> API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
> device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi x11:
> drv: swrast inactive: wayland
> API: OpenGL v: 4.6 compat-v: 4.5 vendor: mesa v: 25.0.7-2 glx-v: 1.4
> direct-render: yes renderer: llvmpipe (LLVM 19.1.7 256 bits)
> device-ID: ffffffff:ffffffff memory: 29.76 GiB unified: yes
> Info: Tools: api: eglinfo,glxinfo gpu: radeontop x11: xdriinfo, xdpyinfo,
> xprop, xrandr
>> Something to try: add to linu line in Grub stanza, to see if it helps:
>> modprobe.blacklist=radeon
> Is the correct way to do that to use the line
> GRUB_CMDLINE_LINUX="modprobe.blacklist=radeon"
> in /etc/default/grub, then run sudo update-grub, then reboot ?
That's the general idea how to make it permanent after testing to see if it helps,
but including in GRUB_CMDLINE_LINUX_DEFAULT=, possibly with GRUB_CMDLINE_LINUX= also.
Strike "E" at the Grub menu and append it to the linu line before proceeding with
boot.
>> Which output port are you using to connect to display? If DVI, you need a
>> dual-link DVI cable to achieve more than 1920x1200. DisplayPort is most
>> reliable option when the motherboard provides one and display has one. If
>> motherboard only has DVI and DP outputs but display only has DVI and HDMI,
>> try a DP-to-DVI or DP-to-HDMI converter or cable to connect DP output to
>> DVI or HDMI input.
> I use a HDMI cable. Both the screen and the motherboard have HDMI slots.
I see nothing that explains what is wrong, only evidence from inxi that things are
not right. Swrast is often a fallback, not what you want to see, particularly for
Display dri. Also bad is the OpenGL renderer report. I don't know what the Phoenix
renderer should be, but you don't want it to be llvmpipe, another fallback.
I agree with Jörg-Volker trying a newer kernel may be your answer, as 8700G may
possibly be just a bit too new to have been thoroughly vetted in 6.12 kernels,
though as a January 2024 product I should think plenty old.
I have no recent AMD GPUs, so no direct experience with Ryzen or Phoenix. I
suppose you have all these installed in current versions?:
amd64-microcode
firmware-amd-graphics
firmware-linux-free
libdrm-amdgpu1
I think your lsmod output indicates yes to all. inxi made evident
xserver-xorg-video-amdgpu is installed.
If no one here comes up with any better suggestion(s), give a try asking in one or
more of the forums I find helpful, and help in when I can:
https://forums.debian.net/
https://www.linuxquestions.org/questions/debian-26/
Not all HDMI cables are created equal. Perhaps yours isn't top quality? I've run
across quite a number over the years that were junk to start with, or didn't last.
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
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