On Wed, May 29, 2019 at 10:52:53AM +1000, Jonathan Gray wrote:
> On Tue, May 28, 2019 at 09:58:58AM -0700, Chris Cappuccio wrote:
> > David Anthony [dma@silentsystems.org] wrote:
> > > All,
> > >
> > > The Lenovo release of T*95 series laptops with AMD Ryzen CPU appears imminent.
> > >
> > > Would these be poor choices for OpenBSD? Are there any anticipated ???gotchas??? that I should be aware of? Any thoughts would be greatly appreciated.
> > >
> >
> > Chances are it will work very well.
>
> I disagree.
>
> >
> > First, less flaws were identified with AMD's implementation of speculative
> > execution. That means that there are less mitigations to slow down the system.
> > Whether there are unidentified flaws, that's another issue..
> >
> > Second, the amdgpu driver was just imported to OpenBSD 6.5-current. That
> > means you'll have graphics support. Combined with the recent improvements
> > to xhci and wi-fi driver improvments (well, mostly intel), support for modern
> > laptops has never been better.
>
> There is no support for newer Intel wireless like the 9260 the T495 has.
>
> The version of amdgpu in the tree does not include support for
> picasso APUs (Ryzen 3xxx) https://en.wikichip.org/wiki/amd/cores/picasso
> or whatever raven2 works out to be.
>
> It is also not enabled by default just yet.
>
> If anyone wants to have a Ryzen thinkpad work in the short term the
> current A series A285/A485 and similar generation E series require less
> work. Suspend/resume doesn't work right on them currently.
> They mostly ship with RTL8822BE wireless which there is no support for
> but this can be replaced with an Intel 8265 which is in the bios
> whitelist and is supported by iwm(4).
>
The E495s I ordered have the Picasso APU and the Intel 9260 wifi. I was
just running 6.5-release. When I get a minute this afternoon, I will
try the latest snapshot and see if I can get video working.
I'll send the dmesg to dmesg@openbsd.org.
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