[ltp] x31, dualview with xrandr and 1680x1050

come se fosse antani linux-thinkpad@linux-thinkpad.org
Mon, 17 Dec 2007 21:23:57 +0100


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On Dec 17, 2007 6:28 PM, Alex Deucher <alexdeucher@gmail.com> wrote:

> On Dec 17, 2007 12:17 PM, come se fosse antani <antani@gmail.com> wrote:
> > On Dec 15, 2007 8:47 PM, Alex Deucher <alexdeucher@gmail.com> wrote:
> >
> > > On Dec 15, 2007 2:55 AM, Toens Bueker
> > >
> > >
> > >
> > > <toens.bueker@lists0903.nurfuerspam.neuroserve.de> wrote:
> > > > Hi *,
> > > >
> > > > at work I just received a new display. As I have just
> > > > changed from crt to tft at home, I thought, I could do the
> > > > same at work.
> > > >
> > > > At home I use a 19'' tft with 1280x1024 resolution. In
> > > > order to get more desktop space, I use xrandr to use the
> > > > lcd of the x31 and the tft in a dualview configuration:
> > > >
> > > >  xrandr --output VGA-0 --right-of LVDS --mode 1280x1024 --rate 60
> > > >
> > > > At the same time I've changed the Virtual setting in
> > > > xorg.conf to (1024 + 1280 = 2304):
> > > >
> > > >  Virtual 2304 1024
> > > >
> > > > Everything works as expected. With a windowmanager, which
> > > > supports xrandr (xmonad), windows can be moved between
> > > > screens but can display different virtual desktops as well.
> > > >
> > > > Now the problem: Changing the virtual line taking into
> > > > account the display size (1680x1050) of the tft at work, X
> > > > no longer starts. The virtual line in question is
> > > >
> > > >  Virtual 2704 1818
> > > >
> > > > "X no longer starts" is probably wrong. Actually the lcd
> > > > of the x31 becomes dark, but if I look really close, I see
> > > > a dialog box (probably from gdm), but I cannot read the
> > > > error message.
> > > >
> > > > Any ideas? Is there anybody out there, who uses an x31
> > > > with a 1680x1050 tft in a dualview configuration?
> > >
> > > 2704x1818 =~ 19 MB at 4 bytes per pixel (depth 24) which is more vram
> > > than the chip has.  If you are using depth 24, try switching to depth
> > > 16 which will cut you down to ~9.5 MB.
> > >
> > Hi.
> > Sorry for the thread hijacking.
> > I have a thinkpad x40  and I think the video chipset is the same as the
> one
> > in the X31.
>
> It's not the same.  the x40 is intel based.
>
> > How can I know the maximal resolution I can obtain in dual view?
> > I don't care about depth (16 would be fine) but I'd like to use a
> 1440x900
> > on external vga since on non-16:9 resolutions my external lcd sucks.
>
> The intel driver works similarly to the radeon driver so the same
> things apply (more or less).
>
can you point me to some resource to understand how the radeon/intel hw
works and which external resolution can I obtain?

thank you,
antani

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On Dec 17, 2007 6:28 PM, Alex Deucher &lt;<a href="mailto:alexdeucher@gmail.com">alexdeucher@gmail.com</a>&gt; wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="Wj3C7c">On Dec 17, 2007 12:17 PM, come se fosse antani &lt;<a href="mailto:antani@gmail.com">antani@gmail.com</a>&gt; wrote:<br>&gt; On Dec 15, 2007 8:47 PM, Alex Deucher &lt;<a href="mailto:alexdeucher@gmail.com">
alexdeucher@gmail.com</a>&gt; wrote:<br>&gt;<br>&gt; &gt; On Dec 15, 2007 2:55 AM, Toens Bueker<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt;<br>&gt; &gt; &lt;<a href="mailto:toens.bueker@lists0903.nurfuerspam.neuroserve.de">toens.bueker@lists0903.nurfuerspam.neuroserve.de
</a>&gt; wrote:<br>&gt; &gt; &gt; Hi *,<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; at work I just received a new display. As I have just<br>&gt; &gt; &gt; changed from crt to tft at home, I thought, I could do the<br>&gt; &gt; &gt; same at work.
<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; At home I use a 19&#39;&#39; tft with 1280x1024 resolution. In<br>&gt; &gt; &gt; order to get more desktop space, I use xrandr to use the<br>&gt; &gt; &gt; lcd of the x31 and the tft in a dualview configuration:
<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; &nbsp;xrandr --output VGA-0 --right-of LVDS --mode 1280x1024 --rate 60<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; At the same time I&#39;ve changed the Virtual setting in<br>&gt; &gt; &gt; xorg.conf
 to (1024 + 1280 = 2304):<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; &nbsp;Virtual 2304 1024<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; Everything works as expected. With a windowmanager, which<br>&gt; &gt; &gt; supports xrandr (xmonad), windows can be moved between
<br>&gt; &gt; &gt; screens but can display different virtual desktops as well.<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; Now the problem: Changing the virtual line taking into<br>&gt; &gt; &gt; account the display size (1680x1050) of the tft at work, X
<br>&gt; &gt; &gt; no longer starts. The virtual line in question is<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; &nbsp;Virtual 2704 1818<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; &quot;X no longer starts&quot; is probably wrong. Actually the lcd
<br>&gt; &gt; &gt; of the x31 becomes dark, but if I look really close, I see<br>&gt; &gt; &gt; a dialog box (probably from gdm), but I cannot read the<br>&gt; &gt; &gt; error message.<br>&gt; &gt; &gt;<br>&gt; &gt; &gt; Any ideas? Is there anybody out there, who uses an x31
<br>&gt; &gt; &gt; with a 1680x1050 tft in a dualview configuration?<br>&gt; &gt;<br>&gt; &gt; 2704x1818 =~ 19 MB at 4 bytes per pixel (depth 24) which is more vram<br>&gt; &gt; than the chip has. &nbsp;If you are using depth 24, try switching to depth
<br>&gt; &gt; 16 which will cut you down to ~9.5 MB.<br>&gt; &gt;<br>&gt; Hi.<br>&gt; Sorry for the thread hijacking.<br>&gt; I have a thinkpad x40 &nbsp;and I think the video chipset is the same as the one<br>&gt; in the X31.
<br><br></div></div>It&#39;s not the same. &nbsp;the x40 is intel based.<br><div class="Ih2E3d"><br>&gt; How can I know the maximal resolution I can obtain in dual view?<br>&gt; I don&#39;t care about depth (16 would be fine) but I&#39;d like to use a 1440x900
<br>&gt; on external vga since on non-16:9 resolutions my external lcd sucks.<br><br></div>The intel driver works similarly to the radeon driver so the same<br>things apply (more or less).<br><div><div></div></div></blockquote>
<div>can you point me to some resource to understand how the radeon/intel hw works and which external resolution can I obtain?<br><br>thank you,<br>antani <br></div></div>

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