x
This website is using cookies. We use cookies to ensure that we give you the best experience on our website. More info. That's Fine
HPC:Factor Logo 
 
Latest Forum Activity

Linux Kernel 4.9 and a (not so) happy Jornada 720

Moderators: insurgent

Jump to page : 1 2
Now viewing page 2 [15 messages per page]

_dev-null Page Icon Posted 2020-02-21 1:28 PM
#
Avatar image of _dev-null
Subscribers
Factorite (Junior)

Posts:
29
Location:
Austria
Status:
Hello!
My recommendations are:
- learn C
- learn to understand the Linux kernel
- Try to write your own code and learn from the errors
- Have a look at other driver sources, there is many stuff you can learn/use or adapt!

I can also recommend this book (in German): "Linux-Treiber entwickeln: Eine systematische Einf├╝hrung in die Ger├Ątetreiber- und Kernelprogrammierung"


Stefan

Edited by _dev-null 2020-02-21 1:42 PM
 Top of the page
_dev-null Page Icon Posted 2020-02-21 1:47 PM
#
Avatar image of _dev-null
Subscribers
Factorite (Junior)

Posts:
29
Location:
Austria
Status:
Short update on the Kernel 4.8.7 and Debian 9 on the Jornada:

- I think i found out why the system is always freezing under load. It is a bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1833281
If i disable swap, the system doesnt crash or freeze. But due to very low RAM on the Jornada, the OOM killer runs quite often and kills applications. I try to find a solution for this.

- 128MB RAM does not work, i have to rewrite the linexec to access all 128MB. The mem=128 is only a kernel option, it shows 128MB available, but never uses it ... (looking for someone with WinCE/C++ and Assembler knowledge)

-APM (Battery/Charger status) is now working properly

What is on my todo list:
- Backlight control
- USB
- Sound
- Suspend (no real suspend, but something like a sleep mode)

Bye
Stefan
 Top of the page
hpc:factor« View previous thread · H/PC Linux / Unix · View next thread »

Jump to page : 1 2
Now viewing page 2 [15 messages per page]

Jump to forum:
Seconds to generate: 0.046 - Cached queries : 58 - Executed queries : 8
Server Time now is: Sunday, 23 February 2020 - 21:15