Boot issue with Asrock X370 Taichi + firmware 4.40 |
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shmerl
Groupie Joined: 23 Oct 2017 Status: Offline Points: 612 |
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Posted: 14 Feb 2018 at 9:43am |
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I just updated firmware to the latest one: 3.20 -> 3.30 -> 4.40, and noticed a weird issue with UEFI boot detection.
Previously, I had CSM module disabled, and it booted just fine with my Debian Linux (UEFI installation on WDC WD2003FZEX-00Z4SA0 hard drive). After the update, firmware failed to see the disk completely, it doesn't even show up in storage on SATA in the UI. I started playing with different settings, and switched CSM boot module on (legacy only). To my surprise, firmware detected the disk (after reboot), and it boots just fine into the OS. It doen't make any sense though. CSM / legacy should mean to support non UEFI boot, and it still doesn't make sense that the disk doesn't show up without it. Some bug? Edited by shmerl - 14 Feb 2018 at 9:44am |
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shmerl
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kerberos_20
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shmerl
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Nope, the drive has proper GPT partitions. The strange thing is, it was booting just fine with CSM disabled until this firmware upgrade. So I suspect it's some kind of a bug.
Edited by shmerl - 20 Feb 2018 at 1:15pm |
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Onslaught2k3
Newbie Joined: 21 Apr 2017 Location: Toronto, Canada Status: Offline Points: 20 |
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I second this issue. Not sure if it exists in the beta 4.41 BIOS. It is unusually long with CSM disabled, whereas with 3.2/3.3 it works fine. Enabling CSM will make BIOS boot at regular speeds. However, I am not using linux and my drives still get detected regardless.
Edited by Onslaught2k3 - 20 Feb 2018 at 5:07pm |
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shmerl
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Yeah, during that long pause I see an underscore cursor on the screen for a while. Except for me it goes back into the setup UI instead of booting. |
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Windows98
Newbie Joined: 11 Apr 2017 Status: Offline Points: 22 |
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After much trial and error I can also confirm odd behavior with CSM (albeit on the K4 Gaming).
On v3.40, my machine booted and worked completely fine with CSM disabled. Since updating to 4.50, I have to boot with CSM enabled otherwise my machine hangs during post (Dr Debug code 0E). |
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MisterJ
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Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD
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shmerl
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I managed to narrow down the problem.
Asrock X370 Taichi lists SATA connectors as:
Apparently, A1-A2 are ports of the ASMedia chipset, while the rest are ports from the AMD chipset. Here is what I see in lspci:
My hard drive was connected to one of the ASMedia chipset ports (A1), and when CSM is disabled, firmware doesn't see the hard drive at all. It sees it when CSM is enabled. When I connect the hard drive to AMD chipset ports, the hard drive is seen in both cases, and the problem doesn't come up. This definitely looks like a bug to me. And on a side note, which chipset is better to use for the primary hard drive? Is any of them performing better? Edited by shmerl - 25 Feb 2018 at 10:20am |
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datonyb
Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139 |
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the am4 direct sata of course
it talks direct to the cpu and not to the asmedia and than thru a gimped pcie channel/bus |
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3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
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