On May 26, 2006, at 6:05 AM, Tobias Netzel wrote:
Hi Carlos,
in order to have the Debian installer recognize the keyboard you
have to repeat the keyboard detection a couple of times - this has
always worked on my system.
Or can't you hit any key anymore after the keyboard recognition has
failed?
If I use apple + power key before the debian installer starts the
keyboard is recognized. If I press the apple + power key after the
installer is showing the first screen. the keyboard is not recognized.
That issue with the missing key up events is an issue with the PPC
archtitecture; this happens on all machines that use the ADB bus
(with Linux) so it seems to be a problem of the ADB driver.
That key presses aren't recognized is probably because of the SCSI
driver; it disables any interrupts very often - maybe I can improve
it a bit.
Unfortunately your machine is very slow and most probably will stay
slow; the system bus speed is quite low (about 22 MHz or so) and I
assume the CPU doesn't have an L2 cache (if it had L2 cache the
kernel doesn't activate it yet).
The lacking L2 cache should be the main thing that limits the speed
of your system.
I think the bus is set by the processor card on my case 33Mhz * 3 =
99MHz (100Mhz) there was one or maybe two processor upgrades with L2
Cache made by newer tech but they are close to impossible to find
I just read that the IDE to SCSI carrier board you are using is
supposed to be somewhat slow...
I will try to benchmark the hard drive on mac os and compare to a
true scsi hard drive (internal) and with a scsi2 hard drive external
As an XWindow system you shouldn't bother using gnome - you don't
have enough memory.
Consider installing wmaker instead - that's what I'm using and it
is small and usable.
wich packeges should I install? will checking just wmaker will get a
usable xwindow?
One thing that greatly improves the overall system speed on all
NuBus PBs is to set the number of colours to 256. 16 bit is
possible but very slow.
The PB 500 series is only capable (at least on Mac OS) of 16bit at
600*480 resolution. Probably this setting is not even supported by
xwindow
I don't know how to test speed - there are benchmark tools I think
but I haven't used one yet.
Did you yet try to boot with serial console and screen console
enabled at the same time "passing "console=tty0" as well as
"console=ttyS0,115200" as kernel parameters?
I will try this.
In the interrupts statistics you have 9 bad interrupts - I'd like
to know what caused them.
I would also like to know this. If there is anything I can do on this
side...
The folowing is not important, just a minor thing. There are some IDE
messages on boot. This machine doesn't and can't have IDE. Could
these be disabled?!
Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 50MHz system bus speed for PIO modes; override with
idebus=xx
SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Thanks Tobias.
Tobias
Am 26.05.2006 um 03:07 schrieb Carlos Castro:
miboot still doesn't work get's to arch:exit prints one blank line
and nothing more happens
Started from scratch.
Booted with mklinux booter using your latest "mach kernel" and
rootdev= /dev/ram and mach options = keyboard_sends_linux_keycodes=1
first 2 boots keyboard was not recognized when I entered the
debian installer could not continue
third boot pressed apple + power keys a couple of times, debuging
messages appered and was able to continue with installer.
sometimes if I press enter the key repeats itself and the menu
selection advances by itself
skipped network config
now formating 1.3Gb IBM Hard drive on ADTX carrier board 100Mb HFS
(sda6) 1.2Gb ext3 (sda7) 98.6Mb swap (sda8) these values where
given by the guided partitioning using the use free space option
and all files in one partition option. Formating ext3 takes a very
long time (close to 10 minutes). swap formating is instantaneous
first install takes a long time, more than 1 hour
did cat /proc/interrupts this is what prints:
CPU0
2: 0 M2 Edge SCC, SCC
10: 33731 M2 Edge VIA-PMU SR
12: 10604 M2 Edge VIA-PMU
19: 509 M2 Edge ncr5380
BAD: 9
changed rootdev to /dev/sda7
finished install and base-config without selecting any packages.
the keyboard is usable but sometimes locks in one key until I
press another key and sometimes it does'nt recognize key presses.
could'nt get the scsi debug messages again during package install.
trying to install package gnome-desktop with aptitude. Will this
get me a working Xwindow?
System seems slow. Is there anyway to test performance?
Thanks
Carlos
Maybe this post is very confusing...
On May 25, 2006, at 9:00 PM, Tobias Netzel wrote:
That's fine.
Hard drive interrupts shouldn't be a problem on your machine; the
SCSI driver doesn't rely on interrupts.
You can check the number of interrupts for the devices with the
command "cat /proc/interrupts".
"nbpmac5380" is the name of the SCSI driver.
Is the keyboard completely unusable after starting base-config?
Please describe exactly what happens.
Do you have to reboot to solve the problem? (Try pressing the
apple and power on keys simultaneously - that will display some
debugging messages from the interrupt handling)
Tobias
Am 25.05.2006 um 20:31 schrieb Carlos Castro:
It works. :-)
Your latest kernel did the trick but... (there had to be a but)
all tests with mklinux booter will try with miboot
1 - if I put ttyS0=115200 debug in the mach options it still
hangs and shuts down after freeing init memory
2 - when running base-config the keybord get's stuck (i think it
misses key-up event and thinks the key is still down) this
problably has to do with hard drive interrupts
3 - it prints every once in a while (when installing packages)
something (if I am able to duplicate I will send you the log)
On May 17, 2006, at 5:32 AM, Tobias Netzel wrote:
Hi Carlos,
I replaced the "Mach Kernel" image with one that has the
modified SCSI timings.
It might also print some additional SCSI debugging output.
Tobias
Am 16.05.2006 um 22:04 schrieb Carlos Castro:
Tobias,
tried the most recen miboot.image and it still does the same
It takes a looooong time to get to "first boot screen" (the
black screen without the penguin logo) and after it prints
arch:exit it prints one blank line and nothing more. There is
no output to ttyS0
..strange...
Carlos
On May 16, 2006, at 3:25 PM, Tobias Netzel wrote:
I'm currently trying to get into the SCSI driver.
Unfortunately that driver is a generic one for hundreds of
different boards and architectures and so it isn't optimized
for the mac.
That has as consequence that it doesn't use any interrupts
and therefor has to poll everything from the SCSI bus. While
polling interrupts are switched off and so one cannot move
the mouse or press any keys while a SCSI command is
processed. And it is VERY slow and merely unusable for hard
disks.
I again tried my SCSI scanner and it's working without problems.
There are options to change some timings; I will upload a
kernel with changed timing values within the next 30 minutes.
I will name it "Mach Kernel.SCSI".
In order to build a Mach Kernel image you have to get a
complete nubus pmac kernel source tree (and you will also
need my latest patches...) and
after configuring the kernel you have to build it using "make
zImage". After that the "Mach Kernel" image will be in "arch/
ppc/appleboot/" as well as the miboot.image.
Did you try the latest miboot.image yet?
Tobias
Am 12.05.2006 um 11:01 schrieb Carlos Castro:
That's bad news... Surely there is another developer that
will help with the scsi (hopefully) :-)
One question.
How do I "package" a kernel to work with MkLinux Booter.
Thanks
Carlos
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