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?
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 just read that the IDE to SCSI carrier board you are using is
supposed to be somewhat slow...
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.
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.
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?
In the interrupts statistics you have 9 bad interrupts - I'd like to
know what caused them.
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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