bbswitch finds 2 discrete graphic cards on laptop with and processor

[QbieShay]

I have an asus TUF 505 laptop with a Ryzen7h and an nvidia 1660ti.

I followed all the instructions on using nvidia-xrun, but i see this with dmesg:

[    3.185160] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.GPP0.PEGP
[    3.185165] bbswitch: Found discrete VGA device 0000:05:00.0: \_SB_.PCI0.GP17.VGA_

lspci output:

01:00.0 VGA compatible controller: NVIDIA Corporation TU116M [GeForce GTX 1660 Ti Mobile] (rev a1)
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c1)

this clicks perfectly with the output when i run bumblebee:

[  376.858693] [ERROR]No integrated video card found, quitting.

OS: 5.5.13-arch2-1

This is as far as i came with my laptop. If anyone knows how to solve this, I'll be immensely grateful.

[sukanka]

See this issue, #187 (comment)
I was experiencing the same problem. And I make a package in aur named bbswitch-ati-git to fix this and compilation error on Linux 5.6.

[QbieShay]

Hi @sukanka. Thank you so much for sharing your fix!
Unfortunately it doesn't work for me, I have the same issue with bumblebeed saying I don't have an integrated card :(

[sukanka]

Hi @QbieShay , I guess your problem is also because of

bbswitch/bbswitch.c

Lines 421 to 430 in 0c38f97

	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
	igd_handle = handle;
	pr_info("Found integrated VGA device %s: %s\n",
	dev_name(&pdev->dev), (char *)buf.pointer);
	} else {
	dis_dev = pdev;
	dis_handle = handle;
	pr_info("Found discrete VGA device %s: %s\n",
	dev_name(&pdev->dev), (char *)buf.pointer);
	}

but your vendor is neither PCI_VENDOR_ID_INTEL nor PCI_VENDOR_ID_ATI, so my fix also fails.
Maybe you can try to print your vendor and then modify that line.

[bomiyr]

I have pretty the same issue with two "discrete" GPUs. My hardware: Lenovo Legion 5, CPU AMD 4800H with AMD Renoir graphics + GeForce GTX 1660 Ti Mobile. OS openSUSE Tumbleweed.

I downloaded the code, applied the fix with adding condition || pdev->vendor == PCI_VENDOR_ID_ATI and compiled. After that I was able to load my version of bbswitch. And still I was not able to make it work, even more - it has really scary behavior. Right after I disable nvidia GPU all fans started spinning at 100%, and then after several dozens of seconds laptop just powered off. Maybe it has some hardware protection or something similar that treat disabled GPU as something wrong, I don't know