Intel HD 4000 not accelerated beside Radeon HD 7470

Massimo B. · Last edited by Massimo B. on Mon Aug 14, 2023 5:15 am; edited 5 times in total

In order to get 2 screens connected beside the one internal Intel-DP, I added a Radeon HD 7470 1GB (?) PCIe low profile card to this old HP desktop with i7-3770. Additionally to the internal Intel DP, I have now another DP + DVI on the Radeon. Everything works fine, except that 3D like glxgears or xscreensaver Geodesic is very slow on the internal DVI port.

Having no 3d acceleration would be ok, as this is an office machine only, but also Chrome with Teams PWA is almost unusable on that screen as well, while Firefox with basic web content works fine.
Playing video doesn't work at all: It's playing distorted green artifacts on the radon ports and doesn't play at all on the Intel: Software rendering makes about 1fps or less, vaapi doesn't work at all eventhough media-libs/libva-intel-driver is installed and USE=vaapi is globally enabled.

Here are the details:

eccerr0r · Posted: Thu Jul 20, 2023 5:34 pm Post subject:

Not sure exactly what the problem is, but seen some pretty crappy performance if one uses the onboard (motherboard) port with more than one of the ports on the radeon gpu board itself (was seeing issues with a 3-port radeon). I think it has something to do with you only have 2 providers with your gpu and you're trying to hook up 3 monitors. The third one it might be trying to multiplex a provider, perhaps the intel onboard. The multiplexing might be an issue but it's not purely because the intel is slow... I've found the intel onchip gpus to hold up pretty well against the [5,6,7]450 ATI Radeons...

Note that ↓ that card currently in my sig is a 4-port card and reports 4 providers so I might not see the same issue if I somehow got more monitors, I'm only using 2 at the moment...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

Massimo B. · Posted: Mon Jul 24, 2023 5:47 am Post subject:

I vaguely remember that this hardware setup was capable to run xscreensaver smoothly with all 3 monitors some day ago.
I also remember there was some setting which of the GPUs does the rendering and which are multiplexing. Where can I see that and where can I change that?
Does the order of screens in X make a difference as it might be that after moving I have changed the ordering of the 3 screens. Currently the one without acceleration has become the primary screen.
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HP ZBook Power G9 i7-12700H|HP ProDesk 600 G5 i7-9700|HP EliteDesk 800 G1 i7-4790|HP Compaq Pro 6300 i7-3770

Massimo B. · Posted: Wed Jul 26, 2023 10:10 am Post subject:

Not only Chrome is affected where I was able to disable Acceleration, but also applications like Teamviewer without an option to disable acceleration. I'm not able to use these application on that screen.
I'm quite sure the hardware-setup was working with all screens accelerated some days ago...

I have to admit, after some investigation the main description is wrong. The non-accelerated screen is not connected to either of the 2 Radeon ports, but it's the integrated Intel port. I tried switching the "Main VGA" in the bios from Radeon to Intel without any change but only changes the initially used screens before X is started.
Where can I configure which graphic hardware does the rendering?
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HP ZBook Power G9 i7-12700H|HP ProDesk 600 G5 i7-9700|HP EliteDesk 800 G1 i7-4790|HP Compaq Pro 6300 i7-3770

Massimo B. · Posted: Wed Jul 26, 2023 10:32 am Post subject:

Massimo B. · Posted: Wed Jul 26, 2023 11:16 am Post subject:

But in Xorg logs I see rendering is only enabled on the radeon:

Massimo B. · Posted: Wed Jul 26, 2023 11:37 am Post subject:

I'm going to try https://wiki.gentoo.org/wiki/Intel#Emerge to force Xorg server to use the Intel DDX driver with SNA for hardware acceleration.
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HP ZBook Power G9 i7-12700H|HP ProDesk 600 G5 i7-9700|HP EliteDesk 800 G1 i7-4790|HP Compaq Pro 6300 i7-3770

Massimo B. · Posted: Mon Jul 31, 2023 6:46 am Post subject:

Actually I like to avoid disabling modesetting and GLAMOR and switching back to old intel drivers.
So before doing that I fired up an OpenSuse live and voila, running a glxgears maximized over all 3 screens runs perfectly with 60fps. So what is different here?

Actually beside some version changes (my Gentoo has been updated recently as well, still not solving the issue), I don't see major differences in Xorg logs:

grknight · Retired Dev Joined: 20 Feb 2015 Posts: 2141

Massimo B. · Posted: Mon Jul 31, 2023 12:50 pm Post subject:

Thanks for clarification.
On thing we found in #gentoo@Libera was: media-libs/libva-intel-driver is not installed. USE=vaapi is not set.
Is that related to this issue? I guess I would need that for hardware acceleration. But from what I understand, the slow glxgears is only about OpenGL missing and not HW acceleration.
I've never set vaapi yet on any desktop machine, but it feels like I should?
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HP ZBook Power G9 i7-12700H|HP ProDesk 600 G5 i7-9700|HP EliteDesk 800 G1 i7-4790|HP Compaq Pro 6300 i7-3770

Massimo B. · Posted: Fri Aug 11, 2023 11:07 am Post subject:

After enabling USE="vaapi" globally I play a

Massimo B. · Posted: Wed Feb 05, 2025 12:02 pm Post subject:

After a while, again trying to solve this issue...

To summarize: I have 1 head on the internal Intel and 2 heads on the additional Radeon graphics.
This morning starting the system, the internal Intel screen was dark and stopped working. I finally got it working again by changing the BIOS settings to have Intel as primary and Radeon as non-boot. Before it was only working the opposite way... don't know.

Again trying to solve, why the Internal Intel doesn't provide acceleration: