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#126 2016-10-01 21:37:24

jghodd
Member
Registered: 2013-02-10
Posts: 60

Re: Intel PowerVR GMA 3600/3650 linux driver released!

yup. as Gusar says - there is no gpu rendering, only cpu rendering. the aborted xf86-video-gma500 project was an attempt to shift the rendering to the gpu, but the developer discovered that this particular gpu renders more slowly than the cpu, rendering the project a waste of time.

btw, 35/60 fps at full screen isn't bad. video normally runs at 30 fps. you can certainly stream internet flash video and locally you could run 720p video. i wouldn;t expect better than that.

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#127 2016-10-02 07:57:01

Gusar
Member
Registered: 2009-08-25
Posts: 3,566

Re: Intel PowerVR GMA 3600/3650 linux driver released!

jghodd wrote:

btw, 35/60 fps at full screen isn't bad. video normally runs at 30 fps.

He's not talking about a video though, but an emulator. Those need to run full speed, or the game runs slow, because it uses FPS as a timing source. At 35/60, the game is unplayable.

Also, accelerating 2D isn't critical here, that can be left to the CPU. The problem is lack of OpenGL, that's what zsnes uses to render in higher resolutions. Access to some sort of video overlay engine (if this thing even has one) would also be needed to relieve the CPU from needing to scale video. Also access to the hardware decoder, if there is one.

So the lack of a xf86-video-gma500 is the least of the problems. What's needed is a 3D driver and ideally VDPAU/VAAPI support, or at least an accelerated Xv implementation. Without those, you're pretty much limited to web browsing. But ITX machines typically aren't used for that, they're used for gaming (hence zsnes, a console emulator) and video playback.

Last edited by Gusar (2016-10-02 08:01:07)

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#128 2016-10-02 17:18:50

jghodd
Member
Registered: 2013-02-10
Posts: 60

Re: Intel PowerVR GMA 3600/3650 linux driver released!

I hear you, @Gusar, and as I've repeatedly pointed out, this chipset (cedar trail) can only be categorised as adequate for performing the usual desktop activities and streaming video. if he needs a gaming system, this ain't it and he needs to consider finding himself a different system. intel is not going to provide any further support for the gma3600, and linux support is most likely not going to get any better any time soon.

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#129 2017-04-25 11:45:02

Lockheed
Member
Registered: 2010-03-16
Posts: 1,451

Re: Intel PowerVR GMA 3600/3650 linux driver released!

jghodd wrote:

I hear you, @Gusar, and as I've repeatedly pointed out, this chipset (cedar trail) can only be categorised as adequate for performing the usual desktop activities and streaming video. if he needs a gaming system, this ain't it and he needs to consider finding himself a different system. intel is not going to provide any further support for the gma3600, and linux support is most likely not going to get any better any time soon.

I followed your instructions (in the external article) on Ace AspireOne D270, but I am getting stuck:

The boot process continues but at some point the screen turns green, and then after few more seconds, it turns black. I can't even change to other TTYs.

I am sure the values I inputed in config files are correct. I triple-checked them.


Laptop: ThinkPad T420s, i7/i5, 16GB RAM, 1080p IPS mod, Arch | HTPC/Server/fw: Zotac AQ01, A4-5000 Kabini, 8GB, Arch/lxd NethServer

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#130 2017-04-25 12:31:01

jghodd
Member
Registered: 2013-02-10
Posts: 60

Re: Intel PowerVR GMA 3600/3650 linux driver released!

@Lockheed - the complicated task of setting up i915resolution, v86d and uvesafb is no longer needed for systems using the intel gma36xx graphics adapters. Recent kernel and drm changes and fixes (and perhaps even the handful of gma500_gfx fixes) have resolved the issue where the gma500_gfx kernel module would not load and initialise the graphics environment properly. The 4.10.x kernel series boots up a gma36xx system perfectly with no intervention or special setup. You can now even add the gma500_gfx module to the MODULES list in /etc/mkinitcpio.conf for early loading. What this means is that you can now drive your graphics environment with the gma500_gfx kernel module by itself without any vesa setup.

It's still a crappy, software-rendering, graphics driver, but at least it now runs on its own. I figure that's bound to give you a little better performance, for what it's worth.

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#131 2017-04-25 16:17:04

Lockheed
Member
Registered: 2010-03-16
Posts: 1,451

Re: Intel PowerVR GMA 3600/3650 linux driver released!

@jghodd: awesome news! Thank you!


Laptop: ThinkPad T420s, i7/i5, 16GB RAM, 1080p IPS mod, Arch | HTPC/Server/fw: Zotac AQ01, A4-5000 Kabini, 8GB, Arch/lxd NethServer

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