Hi Martin,
thank you for the quick reply. I just tried the memtest86 variant you suggested and it runs already for 15 minutes without reporting any errors. So the memtest86+ from the Ubuntu-Live-CD was probably a false alarm then I suppose. I didn't expect that because on a X200 with Libreboot the "regular" memtest86+ runs just fine.
It would be cool if you could mention the fact about where to put the RAM already in the limitations section of the wiki page. It could save other people from flashing coreboot and being disappointed because no vga signal is there afterwards. Although one could debate whether this is a limitation or not when regarding AMD's specifications, if it was working in vendor bios most people will expect to continue working in Coreboot.
Cheers, Daniel
On Mon, 18 Apr 2016 03:54:14 +0000 Martin Roth gaumless@gmail.com wrote:
Hi Daniel, unless you're using the memtest from the coreboot codebase, the memtest failures are likely false.
Try this one - it should work better under SeaBIOS: git clone https://review.coreboot.org/memtest86plus
You can also just build it into the coreboot image as a secondary payload in the payloads menu of kconfig if you have an up-to-date version of coreboot.
In general, AMD specified that you should populate the dimms from the furthest away from the cpu to the closest. The vendor might have found that it worked fine on this board, so changed their bios to remove that restriction. I don't know if that's the issue you're seeing, but it's possible.
I'll test it when I get a chance.
Thanks for the report. Martin
On Sun, Apr 17, 2016 at 19:52 Daniel Kulesz via coreboot < coreboot@coreboot.org> wrote:
Hi folks,
I just flashed Coreboot 4.3 release on my F2A85-M (the "original", not Pro or whatever) together with Seabios and the VGA ROM. I am running the "bare" board with an AMD A4-5700 APU and two 8GB Corsair Sticks () at 1,5V. No attached peripherals except an usb stick which I use for booting a live system. Unfortunately, I experienced the following issues:
(1) When I plug the memory sticks in the black DIMMs I get no Video, although they were working fine there before with the vendor bios. However, they "work" when inserted in the blue slots. (2) I am getting errors im memtest86+ 5.01 in compatibility mode in mem adresses around 3700M. I tried both sticks, each also in single configuration but the issue persists. I had no issues with the vendor bios (when inserted in the other slots). (3) The CPU temperature is reported wrong in Memtest86+ (Memtest86+ reports 15°C while it was around 35-40°C in the vendor bios at around the same fan speed and environment conditions). However, I don't remember if it reported a correct value with the vendor bios.
The memory sticks have been reported as follows by the vendor bios:
Handle 0x0035, DMI type 17, 34 bytes Memory Device Array Handle: 0x002F Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 4096 MB Form Factor: DIMM Set: None Locator: DIMM_B1 Bank Locator: A1_BANK2 Type: DDR3 Type Detail: Synchronous Unbuffered (Unregistered) Speed: 1333 MHz Manufacturer: Corsair Serial Number: 00000000 Asset Tag: A1_AssetTagNum2 Part Number: CMZ4GX3M1A1600C9 Rank: 2 Configured Clock Speed: 1333 MHz
Are these known issues? Or maybe just a false alarm?
Cheers, Daniel
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