LinuxPPC R5 on PowerBook Series 1999

LinuxPPC R5 on PowerBook Series 1999

[Charles A. Jolley]

Hi all:
    I have not been able to find any data on the status of running Linux on
the new PowerBooks released in May.  I downloaded the standard R5
distribution installer last night, however, and tried to run it.  After
clicking the "Linux" button on BootX, it wrote a few lines to the console
and then the screen appeared to shut off.  The hard drive was still clicking
away, however, so I think the kernel might have still been running.

    So, I have two questions:

1.  Is there anyone else who is working on getting Linux running on these
models or are there any additional updates beyond the R5 distribution that I
should get and try and...

2.  I thought I might try to get things working, or at least figure out why
the kernel doesn't boot.  The only issue is I can't get any feedback from
the kernel on why it dies.  It prints a short message when it first starts
but then the screen goes dead before I can read it.  Is there another way to
get that information out?   In fact, since there are no serial ports on this
machine (just USB...like the iMac), how do I get any feedback from the
kernel without functioning video? (or an OF interface to help me along,
which is what I do in my other kernel development...)

Thanks,
-Charles

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Re: LinuxPPC R5 on PowerBook Series 1999

[Kevyn Shortell]

In response to the backlight being off....

Have you tried the brightness button on the keyboard? This worked for me =)

Kevyn

At 7:01 AM -0700 6/30/99, Charles A. Jolley wrote:
>Hi all:
>    I have not been able to find any data on the status of running Linux on
>the new PowerBooks released in May.  I downloaded the standard R5
>distribution installer last night, however, and tried to run it.  After
>clicking the "Linux" button on BootX, it wrote a few lines to the console
>and then the screen appeared to shut off.  The hard drive was still clicking
>away, however, so I think the kernel might have still been running.
>
>    So, I have two questions:
>
>1.  Is there anyone else who is working on getting Linux running on these
>models or are there any additional updates beyond the R5 distribution that I
>should get and try and...
>
>2.  I thought I might try to get things working, or at least figure out why
>the kernel doesn't boot.  The only issue is I can't get any feedback from
>the kernel on why it dies.  It prints a short message when it first starts
>but then the screen goes dead before I can read it.  Is there another way to
>get that information out?   In fact, since there are no serial ports on this
>machine (just USB...like the iMac), how do I get any feedback from the
>kernel without functioning video? (or an OF interface to help me along,
>which is what I do in my other kernel development...)
>
>Thanks,
>-Charles
---------------------------------------------------------------
Kevyn Shortell                    Worldwide Developer Relations
Linux Technology Manager          Apple Computer, Inc
kevyn@apple.com                   http://developer.apple.com/
"War doesn't determine who's right. War determines who's left"



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Re: LinuxPPC R5 on PowerBook Series 1999

[Benjamin Herrenschmidt]

On Wed, Jun 30, 1999, Kevyn Shortell <kevyn@apple.com> wrote:

>In response to the backlight being off....
>
>Have you tried the brightness button on the keyboard? This worked for me =)

Ok, so that means that the only thing that is wrong is reading the
current backlight value from nvram. I beleive the nvram layout did change
with NewWorld, or the PMU now stores the value like it did with the 3400.
I'll check this as soon as I can put my hand on one of those machines.

-- 
           Perso. e-mail: <mailto:bh40@calva.net>
           Work   e-mail: <mailto:benh@mipsys.com>
BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>




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Re: LinuxPPC R5 on PowerBook Series 1999

[Benjamin Herrenschmidt]

On Wed, Jun 30, 1999, Charles A. Jolley <charles.jolley@zeratec.com> wrote:

>2.  I thought I might try to get things working, or at least figure out why
>the kernel doesn't boot.  The only issue is I can't get any feedback from
>the kernel on why it dies.  It prints a short message when it first starts
>but then the screen goes dead before I can read it.  Is there another way to
>get that information out?   In fact, since there are no serial ports on this
>machine (just USB...like the iMac), how do I get any feedback from the
>kernel without functioning video? (or an OF interface to help me along,
>which is what I do in my other kernel development...)

Did you try with the "no video driver" option ?

This may also be a backlight problem, Apple love changing the way the
backlight is controlled from one model to the other. You can try
commenting out the backlight control functions in drivers/macintosh/via-pmu.c.


-- 
           Perso. e-mail: <mailto:bh40@calva.net>
           Work   e-mail: <mailto:benh@mipsys.com>
BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>




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Re: LinuxPPC R5 on PowerBook Series 1999

[David A. Gatwood]

On Wed, 30 Jun 1999, Benjamin Herrenschmidt wrote:

> >2.  I thought I might try to get things working, or at least figure out why
> >the kernel doesn't boot.  The only issue is I can't get any feedback from
> >the kernel on why it dies.  It prints a short message when it first starts
> >but then the screen goes dead before I can read it.  Is there another way to
> >get that information out?   In fact, since there are no serial ports on this
> >machine (just USB...like the iMac), how do I get any feedback from the
> >kernel without functioning video? (or an OF interface to help me along,
> >which is what I do in my other kernel development...)
> 
> Did you try with the "no video driver" option ?
> 
> This may also be a backlight problem, Apple love changing the way the
> backlight is controlled from one model to the other. You can try
> commenting out the backlight control functions in drivers/macintosh/via-pmu.c.

The new PowerBooks are strange....  Under MkLinux, they freeze whenever
you try to write to any location within IO space.  We're getting the data
from OF, so the addresses are right, and we're doing the whole memory
mapping thing.  It acts just like what happens when you try to access a
hardware address where no hardware is present.  I'm beginning to wonder if
the OF tree isn't broken.  If you guys have any luck, let me know what you
figure out.  :-)


David


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Re: LinuxPPC R5 on PowerBook Series 1999

[John Boswell]

I've got it working on my new (bronze kb) 333 G3.  The biggest 
problem I had was actually getting the installer to work.  I had 
ftp'd all the files to a local machine, and burned a CD.  I put 
things on the CD in what I thought were the correct places.  However, 
throughout the install, I'd get a bunch of errors about "can't create 
.../temp", etc.  Seems it was trying to write to the cd.

Anyway, I copied the whole cd to my MacOS partition on the PB (I had 
reformatted the drive, and made the MacOS plain HFS, not HFS+).  The 
X-based installer then completed the install without a hitch.  I only 
installed the "defuault" options, plus "development" (so I could use 
gcc).

I'm using the "Standard" kernel with BootX, no video driver, and no 
ramdisk.  I told it the root device was hda8 (the Linux partition). 
Works just fine; X loads, and I have it running at 1024x768 with 
16+bit color.

There is a note on the Linuxppc.com page about the screen going black 
- the fix is to touch the "Brightness" function key once, and the 
screen comes alive.  I've never had that problem, though.

I've also successfully built and installed MySQL and Apache with PHP. 
I can now give "live" demos to clients of web sites with dynamic 
content - even if they don't have a 'net connection!  Cool. 
Justifies the time spent installing this.

Ethernet doesn't work, but this is a known issue with these PB's, and 
the developers are working on that.

My only problem (besides ethernet) is the flaky trackpad support.  It 
will often think I've double-clicked or have clicked-and dragged when 
I haven't.  I'll sometimes have to click the trackpad repeatedly to 
get control back.

USB support - doesn't seem to work.  My USB mouse (from my B+W G3) 
works flawlessly under MacOS on this PB, but doesn't work at all 
under Linux.

I made the mistake of having a USB Zip drive connected under Linux. 
It doesn't like that, and the load on the machine goes way up, as it 
continuously tries to read the zip drive (I didn't have a zip disk 
in).  Unplugging the Zip disk and rebooting fixed that.

All in all, once Ethernet is working, and if I can fix the trackpad 
flakeyness, this will be very nice.

-john

At 9:46 AM -0700 6/30/99, David A. Gatwood wrote these bits:
>On Wed, 30 Jun 1999, Benjamin Herrenschmidt wrote:
>
> > >2.  I thought I might try to get things working, or at least 
>figure out why
> > >the kernel doesn't boot.  The only issue is I can't get any feedback from
> > >the kernel on why it dies.  It prints a short message when it first starts
> > >but then the screen goes dead before I can read it.  Is there 
>another way to
> > >get that information out?   In fact, since there are no serial 
>ports on this
> > >machine (just USB...like the iMac), how do I get any feedback from the
> > >kernel without functioning video? (or an OF interface to help me along,
> > >which is what I do in my other kernel development...)
> >
> > Did you try with the "no video driver" option ?
> >
> > This may also be a backlight problem, Apple love changing the way the
> > backlight is controlled from one model to the other. You can try
> > commenting out the backlight control functions in 
>drivers/macintosh/via-pmu.c.
>
>The new PowerBooks are strange....  Under MkLinux, they freeze whenever
>you try to write to any location within IO space.  We're getting the data
>from OF, so the addresses are right, and we're doing the whole memory
>mapping thing.  It acts just like what happens when you try to access a
>hardware address where no hardware is present.  I'm beginning to wonder if
>the OF tree isn't broken.  If you guys have any luck, let me know what you
>figure out.  :-)
>
>
>David
>

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Re: LinuxPPC R5 on PowerBook Series 1999

[Charles A. Jolley]

----------
>From: Benjamin Herrenschmidt <bh40@calva.net>
>Date: Wed, Jun 30, 1999, 11:11 AM
>
>
> Did you try with the "no video driver" option ?
>

In fact, I tried it with both "no video driver" option checked and
unchecked.

> This may also be a backlight problem, Apple love changing the way the
> backlight is controlled from one model to the other. You can try
> commenting out the backlight control functions in drivers/macintosh/via-pmu.c.

Ah-ha...this would make sense...it is consistent with the behavior I'm
seeing.  I need to get R5 setup on my other machine here before I can
recompile the kernel without the backlight functions and try it again so it
may be a week or so before I can do this...maybe I can try it this
weekend...

-Charles

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Re: LinuxPPC R5 on PowerBook Series 1999

[Stephen Edie]

The new Powerbook G3 problems are quite strange.  There have been reports
of people who's Powerbooks mysteriously start working.  Just keep playing
around with it, and yours may start working as well.


Stephen

>----------
>>From: Benjamin Herrenschmidt <bh40@calva.net>
>>Date: Wed, Jun 30, 1999, 11:11 AM
>>
>>
>> Did you try with the "no video driver" option ?
>>
>
>In fact, I tried it with both "no video driver" option checked and
>unchecked.
>
>> This may also be a backlight problem, Apple love changing the way the
>> backlight is controlled from one model to the other. You can try
>> commenting out the backlight control functions in
>>drivers/macintosh/via-pmu.c.
>
>Ah-ha...this would make sense...it is consistent with the behavior I'm
>seeing.  I need to get R5 setup on my other machine here before I can
>recompile the kernel without the backlight functions and try it again so it
>may be a week or so before I can do this...maybe I can try it this
>weekend...

Terra Soft Solutions, Inc.
http://www.yellowdoglinux.com



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Re: LinuxPPC R5 on PowerBook Series 1999

[Charles A. Jolley]

Ah-ha... The brightness button did work for me.  I am going to try to get 
the whole system installed tonight when I have access to my cable-modem...

-Charles

----------
>From: Kevyn Shortell <kevyn@apple.com>
>To: "Charles A. Jolley" <charles.jolley@zeratec.com>
>Cc: linuxppc-dev@lists.linuxppc.org
>Subject: Re: LinuxPPC R5 on PowerBook Series 1999
>Date: Wed, Jun 30, 1999, 1:45 PM
>

>
> In response to the backlight being off....
>
> Have you tried the brightness button on the keyboard? This worked for me =)
>
> Kevyn
> 

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