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CEPfister

Member

Registered: 2011-08-10

Posts: 68

xf86-video-intel 2.21.11-1 resolution problem with i915

Hello everyone !

With the update of the xf86-video-intel 2.21.11-1 package, my resolution is not supported anymore. My screen has a resolution of 1920x1080, however, since the update, I have a 1024x768 resolution. The strange thing is that xrandr is reporting that a 1920x1080 resolution is used though.

I am using an intel atom together with the GMA 3150.

Thanks a lot for your help !

Last edited by CEPfister (2013-07-03 17:40:39)

CEPfister

Member

Registered: 2011-08-10

Posts: 68

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

In order to get this right, I have to put the following command in my .xinitrc file :

xrandr -s 1
xrandr -s 0

xrandr -s 0 alone is not working correctly. I think that the intel driver try to keep the booting resolution which is not so nice in my case.

WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

I think that the intel driver try to keep the booting resolution which is not so nice in my case.

I remember seeing something in the Linux tabloids about the intel developers trying to trim out the crap from the xf86 driver.  There was mention of fixing things to make it so that it had to do less readjusting of the resolution.  But it should be the case that KMS is able to set your resolution to what it should be.  So it really *should* be okay during the boot sequence... that is, after KMS sets in.  On my machine, KMS hits really early though because I have i915 listed in "MODULES" in my initramfs.  So all of that list is explicitly loaded before the switch_root happens.

slickvguy

Member

Registered: 2012-10-28

Posts: 18

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

Nevermind.

Last edited by slickvguy (2013-07-05 06:32:18)

jrussell

Member

From: Cape Town, South Africa

Registered: 2012-08-16

Posts: 510

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

So even if you boot to multi-user.target it's the incorrect resolution? At the tty login prompt? (Before you login)

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WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

So even if you boot to multi-user.target it's the incorrect resolution? At the tty login prompt? (Before you login)

It should be.  That is why Kernel Mode Setting is the dominant method these days, as it is far superior to the old way.  Though there is still some hardware out there that does not have KMS in Linux.  Even FreeBSD has started to use KMS.  It is only implemented for Intel HW ATM, but they are now working another (radeon I think?).

CEPfister

Member

Registered: 2011-08-10

Posts: 68

Re: xf86-video-intel 2.21.11-1 resolution problem with i915

So even if you boot to multi-user.target it's the incorrect resolution? At the tty login prompt? (Before you login)

Indeed, it is.

Last edited by CEPfister (2013-07-05 16:56:13)