Re: [gentoo-amd64] Re: video driver / system state question

[Drake Donahue <donahue95@comcast.net>]

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On Tue, 2010-01-26 at 09:30 -0800, Mark Knecht wrote:
> On Tue, Jan 26, 2010 at 2:59 AM, Peter Humphrey
> <peter@humphrey.ukfsn.org> wrote:
> > On Tuesday 26 January 2010 01:13:59 Mark Knecht wrote:
> >
> >> mtrr: type mismatch for c0000000,10000000 old: write-back new:
> >> write-combining [drm] MTRR allocation failed.  Graphics performance may
> >> suffer.
> >
> > This rings a bell. Your kernel line in grub.conf has something like
> > "video=inteldrmfb:mtrr:3,ywrap", no? The 3 is causing the error above, or
> > you may have a 4. Google should be able to find you the docs on this. The
> > options are write-combining and write-back; if one doesn't work the other
> > should.
> >
> > --
> > Rgds
> > Peter.
> >
> >
> 
> Hi all,
>    OK - it's working and gentoo-amd64 is the first email recipient
> from my new i5-661 running Gentoo Linux and XFCE4. THANKS TO EVERYONE!
> 
>    I'll need to document what I did to get it going as well as archive
> files so as to protect myself from some sort of infant mortality or
> operator error. None the less at least it's up and usable.
> 
>    This seems to be one of those cases where I cannot recognize
> exactly who had the final answer as there were a lot of things I did
> last night to get the machine going, both based on information from
> this thread as well as a thread at intel-gfx. Clearly I'm still
> learning/confused about the exact technology here so I want to iron
> that out over the next few days.
> 
>    The main points, subject to me getting schooled on what's really
> happening here:
> 
> 1) The new i5-661 processor and i915 running X are ONLY supported
> using KMS so there seem to be two ways to do this:
> a) Build the kernel with AGP, DRM and KMS into the kernel, or
> b) Build the kernel with AGP, DRM and KMS modular and then use
> i915.modeset=1 on the boot command line
> 
> I am using b) at this time.
> 
> 2) Use drm.debug=0x06 to get lots of nice messages from DRM about
> what's going on.
> 
> 3) Configure the kernel to support frame buffers but turn off
> everything except these 4, and possibly only the first and last ones:
> (grep for "FB" and "FRAMEBUFFER")
> 
> CONFIG_FB=y
> CONFIG_FB_CFB_FILLRECT=m
> CONFIG_FB_CFB_COPYAREA=m
> CONFIG_FB_CFB_IMAGEBLIT=m
> CONFIG_FRAMEBUFFER_CONSOLE=y
> 
>  The CFB entries are probably not necessary but I haven't figured out
> where they are in the kernel yet to turn them off. They do load
> modules so they might be required.
> 
> 4) In make.conf use these lines among others:
> 
> CFLAGS="-O2 -march=native -pipe"
> USE="hal dts mmx sse sse2 ssse3 sse4 -gnome -kde"
> INPUT_DEVICES="evdev"
> VIDEO_CARDS="intel fbdev"
> 
> to set up for X and get a normal text boot which I think is taking
> place in the frame buffer.
> 
> 5) As root run
> 
> Xorg -configure
> Xorg -config /root/xorg.conf.new
> 
> If things go right I'm to the point where Drake was correct. X is up
> but the screen is blank. Copy xorg.conf.new to /etc/X/xorg.conf
> 
> X -retro does work. Thanks Drake!
> 
> 6) emerge xfce4-meta and then as user put "exec startxfce4" in
> .xinitrc, and then startx
> 
>    Assuming I haven't made any omissions or stupid mistakes that gets
> me into xfce4. I don't know if I'm running X over a frame buffer or
> using a more native VGA.
> 
>    I will of course review this in more depth as I document it for
> real but I wanted to say thanks for the answers as they were all
> helpful.
> 
> Cheers,
> Mark
> 
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If you want <CTRL ALT BACKSPACE> to be able to shutdown X:

If you don't have /etc/hal/fdi/policy/10-keymap.fdi:
run:
'cp /usr/share/hal/fdi/policy/10osvendor/10-keymap.fdi /etc/hal/fdi/policy/10-keymap.fdi'

open /etc/hal/fdi/policy/10-keymap.fdi and add as the last <merge key:
'<merge key="input.xkb.options"
type="string">grp:alt_shift_toggle,terminate:ctrl_alt_bksp</merge>'

here the modified /etc/hal/fdi/policy/10-keymap.fdi looks like:
<?xml version="1.0" encoding="ISO-8859-1"?> <!-- -*- SGML -*- -->
<deviceinfo version="0.2">
  <device>
    <match key="info.capabilities" contains="input.keymap">
      <append key="info.callouts.add"
type="strlist">hal-setup-keymap</append>
    </match>

    <match key="info.capabilities" contains="input.keys">
      <merge key="input.xkb.rules" type="string">base</merge>

      <!-- If we're using Linux, we use evdev by default (falling back
to
           keyboard otherwise). -->
      <merge key="input.xkb.model" type="string">keyboard</merge>
      <match
key="/org/freedesktop/Hal/devices/computer:system.kernel.name"
             string="Linux">
        <merge key="input.xkb.model" type="string">evdev</merge>
      </match>

      <merge key="input.xkb.layout" type="string">us</merge>
      <merge key="input.xkb.variant" type="string" />
      <merge key="input.xkb.options"
type="string">terminate:ctrl_alt_bksp</merge>
    </match>
  </device>
</deviceinfo>

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If you want <CTRL ALT BACKSPACE> to be able to shutdown X:
If you don't have /etc/hal/fdi/policy/10-keymap.fdi:
run:
'cp /usr/share/hal/fdi/policy/10osvendor/10-keymap.fdi /etc/hal/fdi/policy/10-keymap.fdi'

open /etc/hal/fdi/policy/10-keymap.fdi and add as the last <merge key:
'<merge key="input.xkb.options" type="string">grp:alt_shift_toggle,terminate:ctrl_alt_bksp</merge>'

here the modified /etc/hal/fdi/policy/10-keymap.fdi looks like:
<?xml version="1.0" encoding="ISO-8859-1"?> <!-- -*- SGML -*- -->
<deviceinfo version="0.2">
  <device>
    <match key="info.capabilities" contains="input.keymap">
      <append key="info.callouts.add" type="strlist">hal-setup-keymap</append>
    </match>

    <match key="info.capabilities" contains="input.keys">
      <merge key="input.xkb.rules" type="string">base</merge>

      <!-- If we're using Linux, we use evdev by default (falling back to
           keyboard otherwise). -->
      <merge key="input.xkb.model" type="string">keyboard</merge>
      <match key="/org/freedesktop/Hal/devices/computer:system.kernel.name"
             string="Linux">
        <merge key="input.xkb.model" type="string">evdev</merge>
      </match>

      <merge key="input.xkb.layout" type="string">us</merge>
      <merge key="input.xkb.variant" type="string" />
      <merge key="input.xkb.options" type="string">terminate:ctrl_alt_bksp</merge>
    </match>
  </device>
</deviceinfo>