Missing Functionality From The Linux Graphics Drivers

[darkbasic]

Kernel Mode Setting?

Both amd and nvidia proprietary drivers have kernel mode settings since a long time.

[fabioamd87]

I can't see it.

[chithanh]

I don't use the proprietary driver, but I have noticed that the following seems to be unsupported or severely limited in comparison to the Windows driver:

• 3D Vision Surround
• acceleration on some rotated monitor setups
• overclocking on some chipsets
• switchable graphics/Optimus

The following works with the open source intel, radeon and/or nouveau drivers but not with nvidia:

• EGL/Wayland
• XRandR 1.2 (superior to both TwinView and Nvidia's Xinerama implementation)
• framebuffer console at native display resolution
• flicker-free vtswich

XRandR 1.2 was discussed in Phoronix articles several times but support never materialized.
When people mention lack of KMS support, I guess they are really referring to flicker free vtswitch to native resolution fbcon.

[darkbasic]

I can't see it.

Kernelspace modesetting isn't something you can see indeed...

[fabioamd87]

but a flicker free boot is visible, and with propriertary you don't have it.

[darkbasic]

That's because linux does not support proprietary kernelspace modesettings, but both catalyst and nvidia drivers do have kernel modesettings.

[fabioamd87]

ok, so it's like that they didn't have it if it doesn't work.

[crazycheese]

I does ..

With URT it does not. Lastest blob and gtx260sp216

Does not make sense anyway (no you can't save power this way).

What?
Not to mention times, when I WANT low power, the lowest setting mode my system consumes 105W idle and 140W with performance mode forced - without any load.

Neither does any driver (well and no one uses openvg).

Gallium does that.

There is ... just set enable the coolbits option in xorg.conf (assuming it is not a laptop where he fan is shared with the cpu).

I have coolbits enabled, there isn't. Coolbits only enable changing clock rate - and only till you logout.

Not true.

I do not have several monitors, since I can not test, since question marks. But try to connect a monitor with different resolution or try to rotate one of them.

Not true .. you can use twinview instead.

Twinview does not require Xinerama?

Lack of SLI profiles for linux ..

Yes, its useless.

[pingufunkybeat]

ok, so it's like that they didn't have it if it doesn't work.

Of course it works. The modesetting is done in the kernel. That's why the kernel blob is so huge.

What you want is a nice framebuffer. It's a minor side-effect of the open-source implementation of kernel modesetting.

[ChuckDriver]

Kernel Mode Setting?

I second this motion