On Tue, May 28, 2019 at 09:58:58AM -0700, Chris Cappuccio wrote: > David Anthony [[email protected]] 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).
