How to dump video bios of Intel HD Graphic 630

[mwang82]

Hi expert,

I would like to dump video bios with the way mentioned in this link:

https://01.org/linuxgraphics/documentation/development/how-dump-video-bios

it is something like this:

• echo 1 > /sys/devices/pci0000:00/0000:00:02.0/rom
• cat /sys/devices/pci0000:00/0000:00:02.0/rom > vbios.dump
• echo 0 > /sys/devices/pci0000:00/0000:00:02.0/rom

when I run the second cmd "cat /sys/devices/pci0000:00/0000:00:02.0/rom > vbios.dump"

, an error is reported as below:

Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff

I searched the linux source code, it looks like this error is reported from function pci_get_rom_size() in drivers/pci/rom.c

Does this mean there is a bug of driver of Intel HD Graphic 630 or a bug in linux system?

I also searched https://www.techpowerup.com/vgabios/

This is a site which hold much video bios of different VGA CARDs, but I did not find video bios of Intel HD Graphic 630.

So my question is how can I get/dump video bios of Intel HD Graphic 630?

I know that video bios should be updated together with system bios, that is another topic, I need the video bios to run guestos in my hypervisor.

Best Regards

Rocky

[Esteban_C_Intel]

Hello mwang82,

Thank you for posting on the Intel ® communities.

I would like to inform you that Intel® does not provide direct downloads and technical support for Linux drivers. The Intel® Graphics Linux driver is primarily supported through the original equipment manufacturer (OEM), the Linux distribution vendor, or by the Intel Open Source Technology Center at 01.org/linuxgraphics. 

See the Drivers for Linux document for more details.

Let us know if you have any additional request.  

Regards,

Esteban Ch.

Intel Customer Support Technician

A Contingent Worker at Intel

[Esteban_C_Intel]

Hello mwang82,

I was checking your case, and I would like to know if you need further assistance? 

Esteban Ch.

Intel Customer Support Technician

A Contingent Worker at Intel

[mwang82]

Hi Esteban, thanks for your help on this, I'm clear with this case now.

[ConnorIrwin]

Hi, mwang82. You said that you figured it out, and I was wondering what you did. I am also having this problem and am unable to dump my bios. Thanks!