On 2016-04-24 17:20, Marcin Juszkiewicz wrote: > W dniu 24.04.2016 o 17:46, Ronald Maas pisze: >> On Sun, Apr 24, 2016 at 2:09 AM, Gordan Bobic <gordan at redsleeve.org> >> wrote: > >>> Given that we are seeing kernel panics with different SATA, SAS, >>> AMD and Nvidia cards, the only thing I can conclude is that there >>> is a major bug somewhere in the PCIe driver. The main difference >>> between my kernel 4.4.x kernels and the CentOS 4.2.0 is that the >>> latter uses 64KB memory pages, so that is probably a good place to >>> start looking. > >> You would expect 64 KB pages to give more issues compared to 4 KB as >> the latter has been the norm for decades. But I see if I can buy some >> other more PCIe graphics cards on Craigslist for cheap and test again >> with the various distros. > >> Otherwise hope these issues will be ironed out over time when >> 96Boards EE boards finally become widely available. > > I have used Sil SATA controller, Matrox g550, few NVidia cards and two > Radeon ones (HD5450 and R240) with APM Mustang (also X-Gene1 like > Gigabyte). All with 64KB kernels. Have you tried any of the above with kernels that have 4KB pages? 64KB memory pages aren't merely inefficient, they are a complete show-stopper for me. > Radeon sits in this machine since my "AArch64 desktop week" which was > September 2015. Used that card since 3.19 kernel and went through all > versions used in Fedora/rawhide. Yeah, I wish Nvidia provided a driver for aarch64. I could really do with NVENC on my system. > I rather suspect Gigabyte firmware having some issues. Try booting > with "acpi=off" and proper DTB to make sure that it is not ACPI > related? Can you elaborate on the firmware and DTB issues you are suspecting and where to get better firmware and DTBs? Gordan