Re: [9fans] More about /dev/draw

[jfmxl <jfmxl@SDF.ORG>]

Thanks very much - and to trebol and eric - for taking the time to help.

On 2016-05-30 02:24, Brian L. Stuart wrote:
> I'll try to answer several questions here together.
>
>> I see an image at bell labs for the raspberry pi.
>> http://plan9.bell-labs.com/sources/contrib/miller/9pi.img.gz
>>
>> I see that there are Raspberry Pi 2 Model Bs and Raspberry Pi 3 Model
>> Bs
>> for sale. Will either one work with that image?
>
> I might be mistaken, but I don't thnk that image has the few little
> changes necessary for the Pi3.  The kernel file contrib/miller/9pi2
> might have the update, but the sources in contrib/miller/9/bcm
> are the most current.
>
>> Do you suppose Pi 3 may have fixed the 'sub driver' bugs? What's a
>> 'sub
>> driver'? not 'usb driver', or is it? The audio out is broken, but it's
>> your fault? How is that?
>
> Feel free to correct me, Steve, if I get anything wrong here.  I think
> it
> was a typo referring to USB.  I'm not sure if it's the same one that's
> causing problems with serial adapters, but I've run into one that I
> keep intending to track down when I've tried to use USB 802.11
> adapters.  As for the audio, I'm pretty sure it's the same position
> many
> of us are in.  We intend to do some work on supporting it, but in the
> words of the late Prince, this thing we call life gets in the way.
>
>> Actually, looking at the back of the monitor, it has an analog vga
>> plug-in and a similar sized digital plug-in, but no HDMI. Can I still
>> use it with Raspberry Pi Plan 9?
>
> As trebol said, if it's a DVI interface, then a simple adapter from
> HDMI
> to DVI will work.  That's the way I run one of my Pis as the office
> every day.  A typical DVI connector on a monitor looks like this:
>
> http://www.publicdomainpictures.net/view-image.php?image=12589
>
>> On another tack ... I have installed plan 9 from user space on my
>> debian
>> machine, and sam and acme seem to open and work ok. But when I type
>> rio,
>> I get ...
>>
>> $ rio
>> rio: it looks like there's already a window manager running;  rio not
>> started
>>
>> So, rio under plan 9 from user space (p9port?) wants the the whole
>> display?
>>
>> I cannot run xfce and have rio in a window?
>
> Correct.  The design of the Plan 9 windowing system is such that the
> ability to run another instance of the windowing system in a window
> falls out very elegantly.  The same is not true of X.  There, each
> display
> has a single window manager.  As Erik noted, there's xnest that allows
> a display to be nested in a window of another display, though I've
> never really played with it.  I got scared enough the last time I
> looked
> at the internals of a regular X server.  I'm not sure my old brain
> could
> handle xnest.
>
> BLS