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username63n
n00b
Joined: 22 May 2018
Posts: 15
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 Posted: Mon May 20, 2019 9:01 pm Post subject: ACPI BIOS Warning (bug): Incorrect checksum in table [BGRT] |
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I get the following message to dmesg: | Code: | [ 0.039880] ACPI BIOS Warning (bug): Incorrect checksum in table [BGRT] - 0x42, should be 0x54 (20170728/tbprint-211)
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Is this a kernel issue or hardware issue? Is there anything i can do?
Here is my motherboard information. I have updated the firmware to the latest.
| Code: | # dmidecode -t 2
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: ASRock
Product Name: Z270 Pro4
Version:
Serial Number: M80-A5006500686
Asset Tag:
Features:
Board is a hosting board
Board is replaceable
Location In Chassis:
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
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There is another warning as well in dmesg:
| Code: | | usb: port power management may be unreliable |
Any suggestion why this warning is thrown and how it affects my system.
Im running gentoo on xen 4.10.3-r1 Dom0 with kernel 4.14.83. Dom0 is working fine and i have not detected any problems. However I cant get pci passthrough to work with pch lanes (gpu with direct cpu link works just fine). |
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mike155
Advocate
Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Tue May 21, 2019 5:45 pm Post subject: |
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| Quote: | | [ 0.039880] ACPI BIOS Warning (bug): Incorrect checksum in table [BGRT] - 0x42, should be 0x54 (20170728/tbprint-211) |
If your machine works well, you can ignore this message.
| Quote: | | usb: port power management may be unreliable |
I haven't seen this message before. Most probably, you can ignore it. Please check that the correct USB2 and USB3 kernel modules are loaded (look at the output of 'lsmod' and 'lspci -k')
See: https://unix.stackexchange.com/questions/323692/what-does-usb-port-power-management-may-be-unreliable-actually-mean
| Quote: | | However I cant get pci passthrough to work with pch lanes (gpu with direct cpu link works just fine). |
I can't help you on this topic, because I don't know Xen... |
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username63n
n00b
Joined: 22 May 2018
Posts: 15
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| Posted: Wed May 22, 2019 7:55 am Post subject: |
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Thanks for your reply.
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If your machine works well, you can ignore this message.
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I am quite sure those issues causes problems with xen pci-passthrough so i would like to fix them.
Anyway, it is still unclear whether the acpi issue is only related to bios/motherboard and is there anything to do. Same error is thrown when reading acpidump with iasl (that is, i think, what kernel does when booting)
The usb warning comes from source file | Code: | | drivers/usb/core/port.c |
function | Code: | | static void link_peers_report(struct usb_port *left, struct usb_port *right) |
but im not familiar with kernel code and dont know what this exactly means. It would be appreciated if someone could help. USB drivers are loaded and USB is working fine in Dom0. |
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mike155
Advocate
Joined: 17 Sep 2010
Posts: 4438
Location: Frankfurt, Germany
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| Posted: Wed May 22, 2019 8:24 am Post subject: |
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| Quote: | | I am quite sure those issues causes problems with xen pci-passthrough so i would like to fix them. |
Well, maybe. But please keep in mind that the Linux kernel writes strange ACPI messages on nearly every mainboard. In most cases, they are harmless and can be ignored. I doubt that the two messages you showed are related to your Xen pci-passthrough problem. |
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