Re: amdgpu laptops with 10 & current?

[Robert Swindells <rjs%fdy2.co.uk@localhost>]

nia <nia%NetBSD.org@localhost> wrote:
> The ThinkPad A485 looks pretty interesting for use with NetBSD.
>
> - 1st Gen AMD Ryzen Mobile
> - 32 GiB DDR4 2400 MHz
> - AMD Radeon Vega 6, 8 or 10
>
> Usually I prefer the smaller X series, but they've made them
> non-upgradable and harder to repair...

Prompted by abs@, I got a reconditioned T495S.

> ethernet is re0, this is different from the intel models that are
> usually wm0. internal dev chatter would point to wm(4) being the
> better driver, but probably not enough to matter for my purposes
> (100mbit/s DSL). I usually use ethernet at home.

The T495S needs a Lenovo specific dongle to use the re(4) device, it was
cheaper to get an axen(4) device to use in the USB-C port so haven't
tried the re(4).

> Anyone using amdgpu with a device like this? I'm sure llvmpipe
> is okay(tm), would be nice to have the runtime configuration
> advantages of modesetting though.

It doesn't really work with amdgpu, fails to attach maybe 9 times out
of 10 and hangs whenever I try to use it. Have seen a report that
Linux 5.6 doesn't work either but later revisions do, not spotted
anything obvious in later DRM drivers to try though.

The integrated camera doesn't work on the T495S, I think this is a
limitation of our xhci driver.