On Sat, Jan 10, 2015 at 8:58 PM, Federico <federicotg@xxxxxxxxx> wrote: > Hi. > I always get a soft lockup when booting since I bought a Cape Verde XT > [Radeon HD 7770/8760 / R7 250X]. > > In this bug report you can find screenshots of the softlockup and the kernel > panic generated by using softlockup_panic=1 > > https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1386973 > > I have this problem with and without nomodeset and I have tested the kernels > that come with Ubuntu 14.04, 14.10 and 15.04 (today's daily image). > > The live session shows me the boot menu where I can enter kernel options > and such, but when booting into a live session it soon prints the softlockup > messages forever. > > In order to install catalyst I had to disable the card in the BIOS and boot > into the integrated graphics. Catalyst works perfectly. > > MoBo is based on AMD 780G (Radeon HD3200 IGP). > > If there's anything I can do to help find a workaround or a fix for this, > let me know. Booting with nomodeset disables the graphics drivers so if you are still getting problems, it may a hardware problem. Can you attach your full dmesg and lspci output? Are you disabling the onboard graphics when enabling the external dGPU? Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
