Hi, sorry for ignoring you previously - I had trouble with finding your message, and the more urgent things got urgent.
Also, thank you for memory and writing this message. I should have time to tinker with the BIOS sometime in February, I'll check out this solution. Regards,brzegorz Jan 5, 2020, 12:51 by mikeb...@gmail.com: > I solved a discrete AMD GPU problem for a similar A88XM-E board, and > the same solution should apply to F2A85-M since these boards are very > similar. However, the extra patches (which aren't in coreboot master) > are required to get it working - more info at > https://review.coreboot.org/c/coreboot/+/30987/ comments. > > > > On Sat, Oct 19, 2019 at 11:05 PM Mike Banon <mikeb...@gmail.com> wrote: > >> >> Do you still have this problem? Please try obtaining a "cbmem log" and >> I'll try my best to help you >> >> On Sat, Oct 12, 2019 at 8:40 PM Mike Banon <mikeb...@gmail.com> wrote: >> > >> > Maybe this "cbmem log" is disabled at your coreboot .config, probably >> > this setting is at General section of menuconfig, can't check right >> > now. Share your .config if there are problems in finding >> > >> > On Sat, Oct 12, 2019 at 12:21 PM Grzegorz Bogdał >> > <bogdal.grzeg...@tutanota.com> wrote: >> > > >> > > "Table not found." >> > > Is it the output, or did I do something wrong? I'm back on the vendor >> > > BIOS right now. >> > > >> > > >> > > Oct 12, 2019, 08:30 by mikeb...@gmail.com: >> > > >> > > Please could you share your coreboot boot log after applying this >> > > patch? Available with ./coreboot/util/cbmem utility >> > > >> > > On Fri, Oct 11, 2019 at 6:11 PM Grzegorz Bogdał >> > > <bogdal.grzeg...@tutanota.com> wrote: >> > > >> > > >> > > I've tried the patch from csb_patcher. I've applied only the >> > > lenovog505s_dgpu patch. Unfortunately, nothing changed. >> > > >> > > >> > > Sep 14, 2019, 14:04 by mikeb...@gmail.com: >> > > >> > > Kinky, have you tried a patch mentioned in my previous message? If >> > > yes, what are the results? >> > > >> > > On Thu, Sep 12, 2019 at 2:31 PM Kinky Nekoboi >> > > <kinky_neko...@nekoboi.moe> wrote: >> > > >> > > >> > > Also user of said board. >> > > >> > > For me only Nvidia GPUs work correctly. >> > > >> > > But using an older Version from 2018, because S3 works there. >> > > >> > > >> > > Am 10.09.19 um 11:05 schrieb Mike Banon: >> > > > Indeed, this patch -- https://review.coreboot.org/c/coreboot/+/31448 ( >> > > > src/device/pci: Add support for discrete VGA initialization and OpROM >> > > > loading ) -- could help, because it will create the ACPI VFCT table >> > > > for discrete RX 570 GPU instead of doing this for integrated HD 8670D. >> > > > You could install it conveniently and securely with the help of >> > > > csb_patcher.sh script ( >> > > > http://dangerousprototypes.com/docs/Lenovo_G505S_hacking#NEWS or >> > > > https://review.coreboot.org/c/coreboot/+/33509 ). >> > > > >> > > > Although there will not be a VFCT for your integrated GPU, it should >> > > > be working fine even without it, maybe at cost of a slightly higher >> > > > power consumption. We have discovered that >> > > > >> > > > " ACPI VFCT - it's a table where AMD stores the Radeon video BIOS when >> > > > the system is booted up in UEFI mode." >> > > > " Where the ACPI VFCT Table is missing, Power States may not work >> > > > properly. " >> > > > >> > > > so it seems without VFCT the integrated GPU is going to be at its' max >> > > > TDP even while not loaded. For example, knowing that a total TDP of >> > > > our G505S laptop's A10-5750M APU (CPU+GPU) does not exceed 35W and >> > > > looking at the values for similar APUs at this table >> > > > https://www.eteknix.com/amd-kaveri-a10-7850k-overclocking-analysis/7/ >> > > > (all values except Intel / RAM / OC), approximately for our A10-5750M >> > > > it should be >> > > > >> > > > Idle | GPU load | CPU+GPU load >> > > > 15.6W | 23.66W | 35W >> > > > 44.5% | 67.6% | 100% >> > > > >> > > > We already knew that A10-5750M is 15W at idle, but have learned that >> > > > GPU adds approximately 23.66W - 15.6W = about 8W while at its' max >> > > > TDP. This G505S laptop comes with a 65W PSU, so with iGPU at it max >> > > > TDP -- the laptop's battery life will be smaller in about 65/(65-8) = >> > > > 1.12 times. However I've never compared the consumption difference of >> > > > coreboot vs UEFI, would be nice if someone could test it in practice. >> > > > >> > > > Since this RX 570 discrete PCI-E card should have its' own flash chip >> > > > for storing the AtomBIOS blob -- unlike our laptop's onboard discrete >> > > > HD-8570M or R5-M230 -- I think in your case there should not be a need >> > > > of storing the discrete GPU's AtomBIOS ROM at your coreboot BIOS in >> > > > addition to the integrated one. However, if the advice above would not >> > > > work, you could try extracting the discrete GPU's AtomBIOS , using >> > > > either >> > > > https://www.coreboot.org/VGA_support#How_to_retrieve_a_good_video_bios >> > > > or >> > > > https://github.com/g505s-opensource-researcher/g505s-atombios#description >> > > > | https://mail.coreboot.org/pipermail/coreboot/2017-July/084660.html >> > > > instruction. >> > > > >> > > > Best regards, >> > > > Mike >> > > > >> > > > On Mon, Sep 9, 2019 at 10:04 PM awokd via coreboot >> > > > <coreboot@coreboot.org> wrote: >> > > >> Grzegorz Bogdał: >> > > >>> Thank you. I'll check it out and report sometime in September >> > > >>> whether the patches helped my case. >> > > >> Please note, AFAIK they have only been tested on G505s's, so may need >> > > >> some modification for your platform. >> > > >> >> > > >> _______________________________________________ >> > > >> coreboot mailing list -- coreboot@coreboot.org >> > > >> To unsubscribe send an email to coreboot-le...@coreboot.org >> > > > _______________________________________________ >> > > > coreboot mailing list -- coreboot@coreboot.org >> > > > To unsubscribe send an email to coreboot-le...@coreboot.org >> > > >> > > >>
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