[9fans] Raspberry Pi help

[9fans] Raspberry Pi help

[Adrian McMenamin]

At the risk of annoying all of you happily using Plan 9 without a
hitch, I wonder if anyone has a list of what hardware (ie mice,
keyboards) are known to work with a Raspberry Pi?

I have been able to successfully boot (two) RasPis with Plan 9,
but alas all I can do is watch the clock tick forward as I cannot
get the mouse or keyboard to work (including with the 7 December
kernel).

Nor can I seem to get the networking to fly, but that seems to be a
case of lack-of-clue on my behalf which is no doubt surmountable.

Re: [9fans] Raspberry Pi help

[Richard Miller]

> I cannot
> get the mouse or keyboard to work (including with the 7 December
> kernel).

See if you can get a bit more diagnostic information than just
"doesn't work", by editing your cmdline.txt to something like this:

readparts=1 kbargs=-d ipconfig=

By removing the 'user=glenda' parameter you'll stop it from
loading the rio desktop; the 'ipconfig=' parameter will make
it look for a DHCP server on your network to give it an ip
address; and the 'kbargs=-d' asks for debugging information
from the usb keyboard+mouse driver.

Re: [9fans] Raspberry Pi help

[Luke Evans]

Of course, maestro Richard Miller will no doubt help you figure this out properly, but by way of confirmation that it does all work...

I have a Rev 1, RasPi 'B'.
- with an el cheapo keyboard (deliberately no USB hub to keep the power requirement as low as possible as the Rev 1 is pretty miserly about USB power).  My keyboard is a "Dynex" (i.e. economy store brand).
- with a Logitech M500 (regular corded) mouse
- with ethernet connected to an Apple Airport Express

The original distribution did not work with the mouse.  However, the new kernel and importantly the "kbargs=-b" seems to get the mouse working fine.

Other observations:
- No keyboard lights (Caps, num lock etc.) work at all.  No biggie.
- I have had one occurrence of a rapid, continuous, spurious mouse clicking after waking the console up from 'sleep'.  Moving the mouse around had it clicking wildly everywhere.  No clicking of mouse buttons would restore the normal state of things, so I rebooted.  Possibly disconnecting and reconnecting the mouse would have been sufficient.

Re: [9fans] Raspberry Pi help

[Adrian McMenamin]

On Tuesday, December 11, 2012 9:36:38 AM UTC, Luke Evans wrote:
> Of course, maestro Richard Miller will no doubt help you figure this out properly, but by way of confirmation that it does all work...
>
>
>
> I have a Rev 1, RasPi 'B'.
>
> - with an el cheapo keyboard (deliberately no USB hub to keep the power requirement as low as possible as the Rev 1 is pretty miserly about USB power).  My keyboard is a "Dynex" (i.e. economy store brand).
>
It seems my problems were fundamentally about power. Quite strange that a powered USB hub appears to break the boot. Meaning my purchase of these things was a waste of money :(

The mouse is now live but seems to be stuck in the top left hand corner - I am sure I can fix that with further fiddling.

Thanks

Re: [9fans] Raspberry Pi help

[Adrian McMenamin]

On Tuesday, December 11, 2012 9:36:38 AM UTC, Luke Evans wrote:
> Of course, maestro Richard Miller will no doubt help you figure this out properly, but by way of confirmation that it does all work...
>
>
>
> I have a Rev 1, RasPi 'B'.
>
> - with an el cheapo keyboard (deliberately no USB hub to keep the power requirement as low as possible as the Rev 1 is pretty miserly about USB power).  My keyboard is a "Dynex" (i.e. economy store brand).
 with ethernet connected to an Apple Airport Express

Thought I had posted a reply yesterday, but cannot see it, so apologies if this turns up twice.

It seems my fundamental problem was one of power. Plainly the powered USB hub I was using was close to useless - or worse than that, delivered enough power to boot the RasPi but not enough to run any peripherals.

Now have a working keyboard and network connection but the mouse is stuck in the top left hand corner. I will look at the various solutions suggested for that and see if I can get it work properly.

Re: [9fans] Raspberry Pi help

[Richard Miller]

> The mouse is now live but seems to be stuck in the top left hand corner

The latest kernel in contrib/miller/9pi should fix that.

Re: [9fans] Raspberry Pi help

[Bakul Shah]

On Mon, 17 Dec 2012 09:40:38 GMT Adrian McMenamin <adrianmcmenamin@gmail.com>  wrote:
>
> It seems my fundamental problem was one of power. Plainly the powered USB hub
> I was using was close to useless - or worse than that, delivered enough power
> to boot the RasPi but not enough to run any peripherals.

Rev 1 boards have polyfuses (labelled F1 and F2) with a large
voltage drop @ 500mA that creates such problems.  You can
short them (or better, use 1 ohm resistors) -- there is a post
or two about this on the pi forum.