Re: xf86-video-intel v.2.2 and DRM

[Tobias Nygren <tnn%NetBSD.org@localhost>]

On Sun, 3 Feb 2008 20:08:49 +0000
"Chavdar Ivanov" <ci4ic4%gmail.com@localhost> wrote:

> Hi,
> 
> Apologies for the cross-posting. I am not sure which is the best place.
> 
> -------------------begin quote---------
> Date: Wed, 30 Jan 2008 13:40:33 +0000 (UTC)
> From: Tobias Nygren <tnn%netbsd.org@localhost>
> Subject: CVS commit: pkgsrc/x11/xf86-video-intel
> 
> Module Name:    pkgsrc
> Committed By:   tnn
> Date:           Wed Jan 30 13:40:33 UTC 2008
> 
> Modified Files:
>        pkgsrc/x11/xf86-video-intel: Makefile distinfo
> 
> Log Message:
> Update to xf86-video-intel-2.2.0.
> Long list[1] of bugfixes. Fixes several bugs with i965, EXA, tv-out,
> LCD detection, console switching, DRM, >4GB address space and more.
> [1] http://lists.freedesktop.org/archives/xorg/2007-November/030246.html
> -------------------------end quote-----------
> 
> 
> broke *for me* Intel DRM.
> 
> Could anyone confirm:
> 
> a. that xf86-video-intel 2.2 works with DRM on NetBSD-current (i386,
> just 1GB memory if that is of any significance; one of the messages
> suggests yes).
> 
> && b. Did [s]he use the unpatched DRM related kernel bits ( for me,
> any attempt to run Intel DRM *without* Yorick Hardy's patches result
> in a hard lock - only the power switch brings me back; luckily, they
> still apply cleanly - with some minor modification at least - see
> http://mail-index.netbsd.org/tech-kern/2007/10/08/0002.html ).
> 
> && c. The combination of Xorg server (+options to compile),
> MesaLib-dri, libdrm which lead to this.
> 
> I have been running generally fine modular-xorg-server 1.3 with the
> above patches , but the xf86-video-intel was from the original source
> as of maybe 7-8 months ago - not quite sure. Seeng the above message,
> I decided to give it a try and lost it. The kernel part seems still
> fine:
> 
> # dmesg|grep drm
> i915drm0 at vga1
> info: [drm] Intel i945GM (unit 0)
> info: [drm] AGP at 0xd0000000 256MB
> info: [drm] Initialized i915 1.5.0 20060119
> 
> Xorg.0.log also seems kosher with the exception of:
> 
> (EE) AIGLX error: drmMap of framebuffer failed (Invalid argument)(EE)
> AIGLX: reverting to software rendering
> 
> which was not the case before. Last, glxinfo with LIBGL_DEBUG=verbose gives 
> me:
> 
> libGL: XF86DRIGetClientDriverName: 1.9.0 i915 (screen 0)
> libGL: OpenDriver: trying /usr/pkg/lib/dri/i915_dri.so
> drmOpenDevice: node name is /dev/dri/card0
> drmOpenDevice: open result is 4, (OK)
> drmOpenByBusid: Searching for BusID pci:0000:00:02.0
> drmOpenDevice: node name is /dev/dri/card0
> drmOpenDevice: open result is 4, (OK)
> drmOpenByBusid: drmOpenMinor returns 4
> drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0
> libGL error: drmMap of framebuffer failed (Invalid argument)
> libGL error: reverting to (slow) indirect rendering
> ...
> 
> I can't revert to the old xf86-video-i810, as the saved binary package
> I have has got the .so file as just a soft link to the (manually
> compiled) intel.so library, which was overwritten by the latest
> package.
> 
> I certainly did quite q bit of googling for a selection of the above
> messages; the result is, as expected, only Linux forum blurb pointing
> to driver replacement and no idea why the above happens.
> 
> It is worth also mentioning that according to the announce message
> quoted above the xf86-video-intel driver should be used with xorg 1.4;
> downstream it may work, but various problems are expected... Is this
> one of them? I *could* switch to 1.4, but that lead me (on a different
> machine) to the need of modifying substantial pkgsrc part (all of
> Gnome, actually, for now), so I would rather avoid it for now.
> 
> Basically, the question is, do we have DRM on Intel chips, and if yes,
> what is the kosher way to achieve it.

Hello Chavdar,

I never actually got the DRM stuff to work with any version of the intel
driver, or any other card for that matter. I apologise for the breakage.

You can revert the update in your tree by:

cvs update -dPD 20080129 x11/xf86-video-intel

In the long run we will need the 1.4 server to get DRI, but I guess
we're waiting for the 1.4.1 release. I should note that Blair's latest
update to wip/modular-xorg-server14 broke it for me. Gives me a black
screen when I attempt to start the server.

-Tobias