Hello Alex, thanks for looking into this.
Nothing helps - not adding "ignore_loglevel" , not removing everything but the most necessary (="BOOT_IMAGE=/boot/vmlinuz-4.3.0-trunk-amd64 ro root=LABEL=dom0root panic=15 iommu=on intel_iommu=on ignore_loglevel") - grub loads the kernel, loads initrd, execs the kernel - and then nothing. no output of any kind from the kernel. no sysrq, no panic-reboot despite panic=15 ... nothing. not even a blinking cursor, just a steady cursor which is still from grub i guess... It all comes down to kernel > 4.1 && iommu=on = not working here Hardware is: Intel DX58SO, Intel CPU i7 920... all pretty solid running for years now, always with iommo=on. I'd love to debug this further, just dont know how... Greetings! Tobias Am Mittwoch, 9. Dezember 2015, 12:07:48 schrieb Alex Williamson: > Try simply removing the "quiet" and "splash" or "rhgb" options if there > are any from the kernel command line in grub first. You can temporarily > just editing the commandline manually as you boot. If you don't have a > serial console available, at least have a camera handy to take a picture > of the screen. You can also add "ignore_loglevel" to the kernel > commandline to get more logging. Thanks, > > Alex _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
