Issues related to the OpenFOAM CAE-Linux based live distribution
 

Hi everyone,

feel free to compliment/complain on the live USB distribution provided for the 7Th OpenFOAM Workshop in this thread.

For more information regarding the disk, see the post in the Announcement section: http://www.cfd-online.com/Forums/ope...tml#post362847

Hello Tomislav,

the burned DVD-Iso works well,
but creating a USB-memory Stick via "usb-creator-kde" leads to a non bootable media
I tried 16GB PNY "Micro Sleek Attaché" and a 32GB CnMemory "Spaceloop" Stick

I tried to boot on two Laptops a Dell XPS and a very old Medion Laptop both
showed up vesamenu.c32 not a COM32R image
the workaround is type
live "carriage return"
"carriage return"

https://bugs.launchpad.net/ubuntu/+s...ux/+bug/617779
http://wiki.ubuntuusers.de/Live-USB#Bootprobleme

Thanks a lot for the info!

Well, I can just tell you that the "usb-creator-gtk" seems to work, I didn't try to burn it using "usb-creator-kde". Can you try it using the "-gtk" version of the software?

Also, have you checked the md5sum?

On thursday I've burned around 10 USB sticks, so far we have tested it on around 7 different laptops and it booted normally.

Hi Tomislav,

now it works
live "carriage return"
"carriage return"
does the magic ;-)
but I do not believe that "usb-creator-gtk" makes the big difference

It should not make any difference, but if you worked with Virtualbox and that burning app for a while, you would see where my advice is coming from. ;) I got some strange errors.... e.g. unexplainable hex-coded errors while cloning the virtual machine machine, sometimes, the burn would be reported as successful, and it would still fail, etc.

I think I've written in the Announcement post that you should hit the "return" key when you see the "boot: " black screen... Both Joel and me could not get rid of that bug.

I used the -gtk on Ubuntu 11.10 and got the same error message as Elvis. However, also the same solution.

Hi Tomislav,

i made a permanent install on my harddisk (just for the speed). Now I struggle with the wlan-adapter.
I installed linux-firmware, and sudo modprobe iwlagn
lsmod | grep iwl
iwlagn 123060 0
iwlcore 125250 1 iwlagn
mac80211 238928 2 iwlagn,iwlcore
led_class 3764 1 iwlcore
cfg80211 148725 3 iwlagn,iwlcore,mac80211
but I do not know how to configure wlan
ifconfig
eth0 Link encap:Ethernet HWaddr 14:fe:b5:a0:8e:c0
...
lo Link encap:Local Loopback
...
but no wlan0
ipmaddr
1: lo
2: eth0
3: pan0
"Network Tools" does not show more devices (lo, eth0, pan0)
Network Conections has a section "Wireless" and seems to be the place to configure my wlan
but I do not get WLAN to work.

Can somebody help on this topic?

=>/etc/network/interfaces
This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-psk mysecretpassword
wpa-ssid mywlan

/etc/network/interfaces

This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-psk mysecretpassword
wpa-ssid mywlan

@Elvis

Hm... I am not sure where the problem lies. Basically, the core of the distribution is ubuntu LTS 10.04 64 Bit, with all the firmwares installed that I could find. What is the type of your wlan card?

Hi Tomislav,
my Laptop is Dell-System-XPS-L702X the wlan works with Kubuntu using a 2.6.38-8-generic Kernel
lspci | grep Net
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 (rev 34)
lsmod | grep iwl
iwlagn 333500 0
iwlcore 167503 1 iwlagn
mac80211 294370 2 iwlagn,iwlcore
cfg80211 178528 3 iwlagn,iwlcore,mac80211
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:
ipmaddr
1: lo
2: eth0
3: wlan0

But CAElinux 2.6.32-41-generic gets different results lspci | grep Net
03:00.0 Network controller: Intel Corporation Device 008a (rev 34)
lsmod | grep iwl
iwlagn 123060 0
iwlcore 125250 1 iwlagn
mac80211 238928 2 iwlagn,iwlcore
led_class 3764 1 iwlcore
cfg80211 148725 3 iwlagn,iwlcore,mac80211
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
pan0 no wireless extensions.

Your wifi firmware is standard.... need more info:

1) When did you download the ISO?

2) Did you try to connect to the wired connection?

2.1) Did your nm-applet start: do you see the network manager applet running on the
top panel in Gnome? Like, if you connect to the wired network, you should see
an icon appearing in the Notification Area on the panel, and a notification
window telling you that you are connected.


There was a bug with the nm-applet that I needed to fix. I've uploaded the new iso version on last Friday, around 16:30, if you have downloaded the .iso file before that,
you have maybe missed the update...

Hi Tomislav,

you are right I downloaded ISO with md5sum 780...251
Now I also got the new one with md5sum 231...756a
will try that and give feedback

Hi Elvis,

thank you very much for your efforts!

problem with Mac
 

Hi Tomislav,

I am now using Mac Pro with Mac OSX Lion. I tried to create a bootable USB from .ISO file by following the instruction here https://help.ubuntu.com/community/In...k#From_Mac_OSX. But it seems that I can not boot from the USB.

Using DiskUtility, it says that the USB has Unformatted Partition Map Scheme while looking at http://support.apple.com/kb/HT1948 they say that a bootable USB stick should have GUID partition type. I tried to partition my USB using GUID type first and then burn .ISO file to that USB. But it doesn't work.

I'm wondering if other Mac users also have similar problem. Looking to hear advices from you to fix that.

Duong

Hi Duong,

I'm sorry, but I never used Macs.... I have also heard that last year people had problems with the USB disk on macs. I don't have access to a Mac, so I don't know if its possible for me to fix this... :confused:

Hi Duong,

it is not possible for most of the newest Macs to boot from USB other systems than OS X.

I've tried a long time with linux, even booting from CD and telling to start the USB instead of the CD itself, and no good results so far.

The easiest solution is to get a virtual machine...

Hi Pablo,

Indeed, using virtual machine solve the problem.

I'm now trying to boot with USB. Will let you know if I get good results.

Duong

Thanks for the tip regarding the virtual machine, I forgot to mention that this might be the best option for people experiencing problems with booting from USB...

I've just burnt mine using Ubuntu 10.04 with usb-creator-gtk .

At first it was non-persistent, but changing grub.cfg , adding "persistent" option after "quiet splash -- " did the trick. Everything works now.

Reference:
http://ubuntuforums.org/showthread.php?t=1749442

Hello and congratulations for creating the linux distribution!

Just a short technical issue: some laptops with ATI graphics cards might have some problems with extreme flickering. This is a bug on the 2.6.32 kernel and can be avoided using the boot parameter:
"radeon.new_pll=0"
just after the "quiet splash" parameters.
If it is possible, you could create an additional boot option on the syslinux configuration, for 'ATI cards', to avoid any problems during the workshop.

Hi Tomislav,

I am trying to login to my work network with the live distribution. However, I got an message like "Enter password to unlock your login keyring", and I don't know what to fill in here. Did I set some password without remembering, or was it already set?

I can't download the .iso, is there something wrong with the server? The URL http://merida.csi.tu-darmstadt.de/op...-CAE-Linux.iso gives me a 404. :confused:

The link has changed:

http://merida.csi.tu-darmstadt.de/op...nux-Public.iso