Hello Braud, On Wed, Jun 26, 2013 at 03:08:51PM +0200, Braud Caroline wrote: > I was using ubuntu 9.10 (ubuntustudio-9.10-alternate-amd64.iso) with linux-rt package. > It was working well, I could run the Cyclictest with good RT jitters. > Also, I was using comedi and could manage a USBDUX board and a M&C board (PCI-DAS6036). > > I needed to update my distrib for some reasons, so I did some search and found that Ubuntu does not support anymore the package linux-rt ... so I couldn't keep RT with an update version of ubuntu ... > I installed a debian distrib in dual boot using a liveCD (debian livecd 7.0 AMD64, Gnome). > Everthing went well and I could drive my board (PCI-DAS6036) with comedi without any problems. > > Here is the structure of my disk: > /dev/sda1 = /boot > /dev/sda2 = / (Unbuntu 9.10) > /dev/sda6 = / (debian 7.0) > /dev/sda7 = /home > > with a common swap, home and boot for both distributions > > $ sudo fdisk -l > Disque /dev/sda : 80.0 Go, 80026361856 octets > 255 têtes, 63 secteurs/piste, 9729 cylindres, total 156301488 secteurs > Unités = secteurs de 1 * 512 = 512 octets > Taille de secteur (logique / physique) : 512 octets / 512 octets > taille d'E/S (minimale / optimale) : 512 octets / 512 octets > Identifiant de disque : 0x000aa812 > > Périphérique Amorce Début Fin Blocs Id Système > /dev/sda1 * 63 208844 104391 83 Linux > /dev/sda2 208845 61641404 30716280 83 Linux > /dev/sda3 61641466 156296384 47327459+ 5 Étendue > /dev/sda5 61641468 70027334 4192933+ 82 partition d'échange Linux / Solaris > /dev/sda6 70027398 131459894 30716248+ 83 Linux > /dev/sda7 131459958 156296384 12418213+ 83 Linux > > > I was quite happy with that and I decided to boot the rt of the debian > distribution. It was not working (it was frozen at the login stage You're saying that Debian 7.0 works fine with the non-rt kernel, but hangs with the -rt flavour kernel? That's the problem I suggest to address. What means "frozen at the login stage" exactly? Does your machine is still pingable then? I don't know what the comedi driver is used for, but IIRC it is still in staging, so can you reproduce without loading the comedi driver? Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
