i have tried builds for F2A85M since version 4.8 dating back to mid 2018, AMD-A8 5500 works properly with IOMMU enabled, still some stabilty problems (full system freezes).
AMD A8-6600K shows the described behavior I also tried that manual microcode update in the past, didnt change anything there, i could retry it for the current build. Serial output gives no information about malfunctioning IOMMU or something, the strugle begins as without IOMMU the system is notable to initialize add-on videocards or the iGPU. Am 17.04.19 um 10:50 schrieb Mike Banon: > On Tue, Apr 16, 2019 at 11:23 PM Kinky Nekoboi > <[email protected]> wrote: >> Amd-Vi loopback errors at linux-boot, >> several peripherie is not working. >> >> Surely it needs only minor changes... is there anybody working at this >> port at the moment? >> > Hi there Nekoboy (sorry if I'm repeating my older questions, I > forgot). Please tell: > > 1) IOMMU - did it ever work on F2A85M board? If you're unsure, could > you try building the older coreboot just to check it? > 2) Have you installed the unofficial microcode patches? If not, please > run this ./ucode.sh script at your coreboot directory: > http://dangerousprototypes.com/docs/Lenovo_G505S_hacking#AMD_microcode_updates > to conveniently and securely patch your cloned coreboot with these > updated microcodes, then try running Linux and tell what microcode > version do you see (confirmation of successful microcode install) and > check if IOMMU got fixed by it. > > Step "2)" should be tried both for the latest coreboot and some older > version. Yes, a bit time consuming, but hopefully you could test it > well. By the way, I got A88XM-E which is not merged to coreboot yet > but is based on F2A85M port, however I have a lot of parallel projects > and didn't have time to even test if my new (actually used) board is > working, so you'll have to rely on your own for a while. > > Best regards, > Mike Banon > _______________________________________________ > coreboot mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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