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Re: Sun Leo (ZX)

On Wed, Mar 12, 2008 at 02:41:25PM +0000, Mark Morgan Lloyd wrote:
> Martin Habets wrote:
> >Does the kernel detect the card when booting? You should see something
> >like the following when booting:
> >/sbus@2,0/SUNW,leo@2,0: leo at x:x
> >Also you should have leo ranges in /proc/iomem and /proc/ioport.
> Ahhh... no, I don't see that in dmsg or anything in those proc files. I can 
> see the driver enabled in .config and I think that I'm running the 
> appropriate kernel but it's obvious that I need to go and check.

Looking in drivers/video/leo.c leo_init() I see
        if (fb_get_options("leofb", NULL))
which leads me to suggest booting with option 'video=leofb:on'.

> Am I correct in interpreting what you've said as meaning that X's "No 
> devices detected" actually means "I'm not seeing the appropriate device 
> support in the kernel"?

That's one option. It could also be the wrong device was specified in the

> >Seems this driver creates a normal fb device. Make sure you have /dev/fb0
> >and/or /dev/fb0autodetect.
> >You could try the fbdev X driver:
> >       Driver          "fbdev"
> >without specifying a BusID.
> >
> >This is just to see if it detects a device. If it does the issue is with 
> >the
> >leo X driver. If it does not my guess it more toward a kernel issue.
> Noted. Unfortunately the disc attached to the machine has started failing 
> and is rapidly getting worse so that's something that's got to be tackled 
> before I can progress this much further.

Yes, obviously. But if Tom's right (and he usually is) the fbdev trick
won't work.

Good luck,
> I'll be back, but I might be some time...
> >Martin
> >
> >On Sun, Mar 09, 2008 at 07:17:49PM +0000, Mark Morgan Lloyd wrote:
> >>Jurij Smakov wrote:
> >>>On Sun, Mar 09, 2008 at 04:01:40PM +0000, Mark Morgan Lloyd wrote:
> >>>[...]
> >>>>(II) SUNLEO: driver for Leo (ZX)
> >>>>(EE) No devices detected.
> >>>>
> >>>>Fatal server error:
> >>>>no screens found
> >>>>
> >>>>I've tried several combinations of BusID etc. without success.
> >>>Can PROM/prtconf see this device? I guess that would give you the 
> >>>correct location, if any.
> >>>
> >>>Best regards,
> >>Yes, print-devs (?) shows it as /sbus@2,0/SUNW,leo@2,0 and I can see it 
> >>in the /sys tree.
> >>
> >>lssbus doesn't work on this system but I've never tried running it on 2.6 
> >>before- I need to check whether there's an updated version.
> >>
> >>I don't believe there's a hardware problem since it displays the Sun logo 
> >>with a Lion sitting on it when video first comes up, I do note however 
> >>that it's a rather magenta Lion and that console text is very slow.
> >>
> >>This is a sacrificial development machine and I'm quite happy to 
> >>experiment on it. Which is fortunate since I tried installing Lenny 
> >>earlier and am now getting "Fast data access MMU miss" [sigh].
> For the record, that last was a red herring- I was saying "?" to OpenPROM 
> rather than "help".
> -- 
> Mark Morgan Lloyd
> markMLl .AT. telemetry.co .DOT. uk
> [Opinions above are the author's, not those of his employers or colleagues]
> -- 
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30 years from now GNU/Linux will be as redundant a term as MERT/UNIX is 
today. - Martin Habets

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