Am 29.01.2015 um 16:00 schrieb aTc atc@k-n-p.org:
I'm now using the 3.19.0-rc5-gta04 , with a few config changes, and everything seems extremely stable. Even running the debian xorg causes no problems. Haven't seen any segfaults when compiling either.
The (major) things i enabled were lpae and virtualization, which also required disabling armv6 support. So i suspect one of those to be the cause of the problems.
Oh, that looks good! At least we have traced it down to a manageable set of potential factors. Which does not mean that it will be easy to find out what the problem-maker really is. But it is easier to ask e.g. on LKML or the e2e-Forum if someone knows about such issues.
Without those changes, the debian xorg crashes almost immediately (unless the non thumb version from our repo is used)
compiled version here : http://next.openpandora.org/omap5/kernel/3.19.0-rc5-gta04-av-2.tar.xz
Great. Thanks!
Nikolaus
PS: I am in the middle of placing the copper traces for the CPU board. Looks as if it is just time-consuming, but no big hurdles are visible. It is indeed easier on a 8-layer 100um structure PCB with micro-vias than a 4-layer board without and 150um structure (making it much cheaper…). With a little luck we will have our own omap5 board soon (there can be an engineering variant with 2 SD slots and a micro-USB socket for external power and FTDI console - I plan to build 1, maybe 2 of these for board bringup)