Please help me boot Debian from SD

[apink]

Network manager seems to be working.  I installed it, then took eth0 out of /etc/network/interfaces, then restarted network manager.  Ethernet started right away upon plugging the cable in.  Nice.

Up next:  It would be nice to enable power-saving as in angstrom.

 

[smilnovi]

Network manager seems to be working.  I installed it, then took eth0 out of /etc/network/interfaces, then restarted network manager.  Ethernet started right away upon plugging the cable in.  Nice.

Up next:  It would be nice to enable power-saving as in angstrom.

Ah yes, the powersaving. Well, that's where I'm stuck currently, but don't have time to try to solve it. If you manage to solve it, I would appreciate if you could describe your solution here.

 

[smilnovi]

Here is my setup for mounting various elements of the system. With this, I have managed to reduce the overall usage of the RAM, and KDE works better.

/etc/fstab:


rootfs / auto defaults,noatime 1 1
proc /proc proc defaults 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
usbfs /proc/bus/usb usbfs defaults 0 0
tmpfs /var/volatile tmpfs defaults,size=1% 0 0
tmpfs /run/shm tmpfs mode=0777 0 0
/dev/mmcblk1p2 swap swap defaults 0 0
/dev/mmcblk0p2 swap swap defaults 0 0

By default, I have swap partitions on both SD cards, so that I can always have swap, regardless of how many SD cards I have in pandora - see the swapon/swapoff utils for details on managing swap.

/etc/default/tmpfs:


RAMLOCK=no
RAMSHM=no
TMPFS_SIZE=1%VM
RUN_SIZE=1%
LOCK_SIZE=26214400 # 2.5MiB
SHM_SIZE=1%
TMP_SIZE=1%

I have 1GHz pandora with 512 MB RAM, and with this setup, I have managed to keep the RAM usage to around 300-400 MB and that is while running KDE, postgresql, apache, and several firefox and terminal windows, and development instance of django. So far, I haven't seen more than 50 - 100 MB of swap usage. I have copied the scripts from pandora that do the setup, because I still haven't had time to check all of them and clean them from the stuff I don't need, but I have disabled zram because I don't need it.

System is very responsive and usable. And of course, the parameters depend on what you do.

I'm using KDE because I'm toying with KDE and python, but I guess that for XFCE and some other lightweight X managers the RAM usage would be even less.

 

[apink]

Ah yes, the powersaving. Well, that's where I'm stuck currently, but don't have time to try to solve it. If you manage to solve it, I would appreciate if you could describe your solution here.

It's not pretty, but I inserted the suspend_ function found in /usr/pandora/scripts/op_power.sh into pm-suspend.  I am using fluxbox with xfce4-power-manager running.    Now the pandora seems to be holding power over periods when the lid is closed.

1.  edit  /usr/pandora/scripts/op_power.sh  such that the pvrsrvkm test is not done (add the # signs)


#if lsof -t /dev/pvrsrvkm > /dev/null; then
# return 1
#fi

2.  copy /usr/sbin/pm-suspend to /usr/sbin/pm-suspend.bak or some such so you can backtrack if needed.  Then change /usr/sbin/pm-suspend to


#/bin/sh
. /usr/pandora/scripts/op_power.sh
suspend_

(include the period, space beginning the second line, and the underscore ending the third.  I know this is really editing some linked files.  Ok.)

It's a little buggy but it gets me through the day.  For some reason I lose the capability to go between screens (ctr-alt-arrow etc) for a little time after starting it up.  But after a while it seems to kick in and I get all four screens.  EDIT:  this is no longer an issue.