Hi, this time I'm using Debian testing. Drivers shouldn't be a problem since I 
get drastically different results on the same hardware/software combination, 
the only difference being different BIOS chip plugged in(F2-A85m allows to swap 
them easily). One chip has proprietary BIOS, second one Coreboot.


14 Jul 2020, 11:57 by mikeb...@gmail.com:

> Hi Grzegorz , please remind what Linux distro you're using and how
> fresh is its' drivers/software. AMD drivers really improved during the
> last couple of years, but if you're running some ancient "debian" - of
> course GPU performance is lower than expected. Myself, I'm currently
> using Artix Linux - while it has a really fresh software (just like
> Arch), it almost never breaks, and doesn't have a SystemD (good for
> you if you don't like it as well).
>
> On Mon, Jul 6, 2020 at 11:39 PM Grzegorz Bogdał
> <bogdal.grzeg...@tutanota.com> wrote:
>
>>
>> Sorry, I've been overeager with that report. GPU initializes and is good for 
>> desktop use, but the performance in games is abysmal
>>
>>
>> 6 Jul 2020, 20:56 by bogdal.grzeg...@tutanota.com:
>>
>> It took a while, but I've flashed coreboot from newest master on F2-A85m+RX 
>> 570 and it works. Great stuff, thank you for your work: )
>>
>>
>> 13 Jan 2020, 17:28 by mikeb...@gmail.com:
>>
>> Jan 12, 2020, 14:43 by mikeb...@gmail.com:
>>
>> Solution for your coreboot + discrete GPU problems like
>>
>> amdgpu kernel bo map failed [...] error -22
>> amdgpu_vram_scratch_init failed [...] error -22
>> fatal error in GPU initialization
>>
>> It turned out that a fix like
>> https://review.coreboot.org/c/coreboot/+/38215 ( /* Set to 0xD0
>> instead of 0xE0 to avoid the PCI resource allocation problems. */
>> InitPost->MemConfig.BottomIo = 0xD0; // at the beginning of
>> board_BeforeInitPost function at board's OemCustomize.c ) that worked
>> for HD6670, is not enough for a huge RX590 - which is huge in all
>> relations, but most importantly the memory ranges!
>>
>> To get RX590 working with ASUS A88XM-E, I had to decrease a BottomIo
>> even further - to 0xC0 - and also to reduce the
>> BLDCFG_UMA_ALLOCATION_SIZE at board's buildOpts.c from 0x2000 (512MB)
>> to 0x1000 (256MB), - to get this extra "0xD0-0xC0"=0x10000000 room.
>> And then it worked perfectly, at least with DRI_PRIME=1 ./Supertuxkart
>> GPU offloading: ultra settings on integrated - 4 or 5 fps, with
>> offloading - 60 fps. I'm sure this fix will work for your other RX 5**
>> as well, but don't know if I should be trying to commit it to master,
>> since it lowers the integrated GPU's shared memory.
>>
>> RX590 is the most powerful AMD GPU which does not contain a Platform
>> Security Processor aka PSP (yes, they've started adding this crap to
>> the GPUs as well, and newer Vega / RX 5*** are all contaminated - see
>> for yourself at freedesktop drm/amdgpu sources) . That's why it was
>> really important to get RX590 working. So happy it was possible,
>> thanks to you all ;-)
>>
>> On Mon, Jan 13, 2020 at 2:21 AM Grzegorz Bogdał 
>> <bogdal.grzeg...@tutanota.com> wrote:
>> Great job!: ) So, A10-6800k/FX-8xxx combined with RX 590 is probably the 
>> strongest x86 desktop without PSP/ME that we'll get in this reality?
>>
>>
>> Yes, if you meant x86 desktop "supported by coreboot master" -
>> regarding the CPUs ;-) Otherwise there is a supported-by-coreboot-4.11
>> M5A88-V motherboard with AM3+ (maybe can put FX-9590 there, if
>> coreboot supports and without frying it?) and KGPE-D16 with its' two
>> Opterons 6386 SE for a large desktop. Also, PDF [link 1] at page 12
>> says Carrizo is the "1st ARM Trustzone Capable Performance APU", that
>> means Kaveri and its' refresh Godavari (i.e. A10-7890K) doesn't have a
>> PSP. A88XM-E motherboard is FM2+ socket, so theoretically it could
>> support Godavari A10-7890K. However Balazs wrote that AGESA of Kaveri
>> is a blob (not good!) and there's uncertainty if could get it working
>> without getting this APU for trying.
>>
>> As you see, there are CPUs more powerful than A10-6800K which don't
>> have a PSP crap but their coreboot master support is questionable. And
>> don't want to be without coreboot, since UEFI could have many holes
>> and stuff like Computrace which doesn't need to rely on ME/PSP to
>> function. So yes, A10-6800K seems to be the best at the moment. I got
>> A10-6700 only because its' quite hard to find a new A10-6800K for a
>> reasonable price and I read about bad overclockers who played too much
>> with core voltages and cores deteriorate, becoming unstable even at
>> stock speeds (so one needs to underclock then). A10-6700 is the most
>> powerful with a locked multiplier, so less attractive to overclockers
>> and may be safer to buy used.
>>
>> GPUs: yes, RX590 is the most powerful GPU without PSP ! (not
>> considering NVidia at all because of their proprietary driver tricks
>> and hostility towards the opensource) . Although there is RX600 series
>> [link 2], they are hard to buy and lower performance. Unlike the
>> majority of people (who don't care about performance), I actually
>> hoped there would be another refresh of Polaris architecture - simply
>> because no PSP, but doesn't seem there would be more Polaris high end
>> GPUs at the moment.
>>
>> As for the most powerful RX590, I suggest those which have 8400MHz
>> memory by default - i.e. Sapphire Nitro+ parts. For myself I got a
>> cute [link 3] SKU 11289-07-20G aka "Sapphire Nitro+ RX 590 8GB AMD
>> 50th Anniversary Gold Edition" (golden shroud) for about 250 USD.
>> Aside from being an AMD fanboy collector's item, it's nearly identical
>> to 11289-01-20G aka "Special Edition" (blue shroud) - however, there
>> were multiple hardware revisions of a Special Edition card (could be
>> distinguished by looking at their advanced P/N product number also
>> printed), while this Gold Edition came much later and with it I think
>> you're guaranteed to get the latest hardware revision. Now they are
>> sold out at many countries, but if you're lucky you could find some -
>> although maybe for the really inflated prices like [link 4] - that's
>> ~320, about 30% more than I paid.
>>
>> If you know another RX590 which is more powerful out of the box,
>> please tell - maybe I'd get a second one! In example, here's a pretty
>> [link 5] PowerColor Red Devil RX 590 8GB, with a neat pentagram on
>> its' back plate ;-) But its' memory is 8000MHz by default.
>>
>> [1] 
>> https://github.com/mikebdp2/coreboot-related/blob/master/PHILIPPINES_PS-DBM%20Event%20July%2015%2C%202016.pdf
>> [2] https://en.wikipedia.org/wiki/Radeon_600_series
>> [3] https://www.sapphiretech.com/en/consumer/nitro-rx-590-8g-g5_gold_edition
>> [4] 133178207205 -
>> https://www.ebay.com/itm/SAPPHIRE-AMD-RADEON-RX-590-NITRO-AMD50-GOLD-EDITION-8-GO-GDDR5-11289-07-20G/133178207205
>> [5] https://www.powercolor.com/product?id=1542008942
>>
>>

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