3

I'm trying to identify AMD graphics card between onboard and dedicated GPU.

using sudo find /sys/devices | grep pp_dpm_mclk I was able to find information regarding AMD graphics card.

now that I have those information, how do I know which is the onboard GPU? thank you for any suggestions / pointer

(edited) here's the lspci | grep VGA

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 98e4 (rev 81)
07:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev c7)
09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev e7)
Improve this question
13
  • 1
    please add the output of lspci | grep VGA to your question. Commented Dec 28, 2017 at 3:08
  • 2
    Device id's are registered and published, a search for pci id 98e4 got me to this page, which says 67df is your rx480. Commented Dec 28, 2017 at 3:41
  • 3
    the GPU in the lowest numbered PCI "slot" is usually (almost always) the built-in GPU. 00:01.0 in this case. looking up the device id and revision (98e4 rev81), it's an AMD Radeon™ R4E Graphics adapter. The other two seem to be an RX 480 and an RX 580. Commented Dec 28, 2017 at 3:43
  • 2
    i guess you could memorise all the device codes and revisions for all GPU manufacturers. or compile a list. more seriously, as I mentioned, the GPU in the lowest numbered PCI slot is almost certainly the on-board GPU. Try it and see. If it isn't, move on to the next. repeat until you've found it. Commented Dec 28, 2017 at 3:49
  • 2
    the list could be a lot shorter if you only bother memorising what GPUs you bought and which slot you installed them in (and on which system) :) i.e. this seems to be more of an asset management issue than a tech issue. Commented Dec 28, 2017 at 4:18

1 Answer 1

Reset to default
3

Device id's are registered and published, a search for pci id 98e4 got me to this page, which says 67df/c7 is your rx480.

That page doesn't look like it's as well-maintained as its prominence on the search results suggests. I think lshw/lspci/hwinfo all use a pci.ids file maintained collaboratively by volunteers, if you're using one of the stability-uber-alles distros, debian stable or rhel or centos maybe, I guess that file could be far enough out of date that those id's aren't registered yet.

Improve this answer

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.