On Tue, 25 Sep 2018 09:28:27 +0800 (CST) tugouxp <13824125...@163.com> wrote:
> hi folks: > > > my project take wayland as display server, weston working with > libdrm-backend, the opegles and egl interface are provided by arm > official provide "libmali.so" library. > > > but now i want to test whether it can be worked that get rid of mali > library completely ,and use mesa library instead. i am use the yocto > build system and the compile process is very succefully, but when i > tested the weston with following command. > > weston --backend=drm-backend.so --tty=1 --idle-time=0 & > > it seems the weston crashed and cant be launched, this command > works fine with "libmali" method, so it should not be the problem of > mali . > > > the output is very chaos by different threads log interrupted each > other, thanks for your kindly help. > Hi, you can redirect stdout and stderr to a file. Printing to the terminal stops working once Weston enters graphics mode. If you are launching weston through a serial console, maybe it overflows and drops random bytes - is your serial flow control correctly set up also for the kernel console output? It looks like you get kernel bug output too. A kernel bug is always a kernel issue, so you would need to look into that first. Also make sure that Weston is not somehow patched for Mali specifically. I don't know if such patches exist, but if they do, we can't support them. This page seems to summarize the status of FOSS drivers: https://wiki.debian.org/MaliGraphics See also the upcoming XDC presentation about Panfrost this week: https://www.x.org/wiki/Events/XDC2018/Talks/#lyude_alyssa Thanks, pq
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