two AMD cards failing with radeon driver

[Krister Swenson]

Sorry for the spam folks.
I didn't realize that the new amdgpu driver would work on that old
hardware.  I'm using that driver now, hoping it will be more stable than
radeon. I'm not sure why Ubuntu is set up to use the radeon driver by
default.

kms

On Wed, Aug 21, 2024 at 1:52 PM Krister Swenson <swenson at lirmm.fr> wrote:

> Hello all,
>
> I couldn't find a list to send mail to concerning the radeon driver. Is
> this an OK place?
>
> I'm desperate for help, as I have crippling issues with my AMD cards since
> updating to Ubuntu 24.04. This is my work machine, and it's seriously
> hampering my productivity.
>
> I have a bit of experience messing around with this stuff over the last
> decades, but remain very naive about debugging graphics problems. I have
> two cards:
>
> 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> Oland GL [FirePro W2100]
> 04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> Caicos XT [Radeon HD 7470/8470 / R5 235/310 OEM]
>
> Since the update the Radeon HD no longer works: I can boot into safe mode,
> but any attempt to start GDM results in a black screen with a line at the
> bottom.
>
> The FirePro card appears to work fine, until the driver goes haywire and I
> see a screen full of snow. I can still <ctrl><alt><F4> to a terminal and
> shut the machine down (without seeing anything but snow), but the graphics
> will not work. This happens with Wayland and Xorg. I posted a bug report
> here that includes details from syslog:
>
>
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/2068342
>
> I would greatly appreciate any advice, hints, or workarounds on this
> issue, as it's seriously holding me back. Thank you folks!
>
> kms
>
> p.s.
>
> A few more details follow...
>
> => sudo lshw -c video
>   *-display
>        description: VGA compatible controller
>        product: Oland GL [FirePro W2100]
>        vendor: Advanced Micro Devices, Inc. [AMD/ATI]
>        physical id: 0
>        bus info: pci at 0000:03:00.0
>        logical name: /dev/fb0
>        version: 00
>        width: 64 bits
>        clock: 33MHz
>        capabilities: pm pciexpress msi vga_controller bus_master cap_list
> rom fb
>        configuration: depth=32 driver=radeon latency=0 resolution=2560,1080
>        resources: irq:50 memory:e0000000-efffffff memory:f3e00000-f3e3ffff
> ioport:8000(size=256) memory:f3e40000-f3e5ffff
>   *-display
>        description: VGA compatible controller
>        product: Caicos XT [Radeon HD 7470/8470 / R5 235/310 OEM]
>        vendor: Advanced Micro Devices, Inc. [AMD/ATI]
>        physical id: 0
>        bus info: pci at 0000:04:00.0
>        version: 00
>        width: 64 bits
>        clock: 33MHz
>        capabilities: pm pciexpress msi vga_controller bus_master cap_list
> rom
>        configuration: driver=radeon latency=0
>        resources: irq:51 memory:d0000000-dfffffff memory:f3d20000-f3d3ffff
> ioport:7000(size=256) memory:f3d00000-f3d1ffff
>
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