Created attachment 557924 [details] Results from emerge --info Running strace cheese ends with writev(8, [{iov_base="\232\16\2\0\0\0\0\0", iov_len=8}, {iov_base=NULL, iov_len=0}, {iov_base="", iov_len=0}], 3) = 8 poll([{fd=8, events=POLLIN}], 1, -1) = 1 ([{fd=8, revents=POLLIN}]) recvmsg(8, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\1\250\242\0\20\234\0\0@p\2\0\0\0\0\0\340/\365r@V\0\0\304/\365r@V\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 4096 recvfrom(8, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 155744, 0, NULL, NULL) = 155744 openat(AT_FDCWD, "/proc/modules", O_RDONLY) = 9 fstat(9, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 read(9, "xt_recent 20480 1 - Live 0x00000"..., 1024) = 1024 read(9, "00000\nnf_nat_pptp 16384 0 - Live"..., 1024) = 1024 read(9, "0 1 bluetooth, Live 0x0000000000"..., 1024) = 772 close(9) = 0 openat(AT_FDCWD, "/proc/driver/nvidia/params", O_RDONLY) = 9 fstat(9, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 read(9, "Mobile: 4294967295\nResmanDebugLe"..., 1024) = 626 close(9) = 0 stat("/dev/nvidiactl", {st_mode=S_IFCHR|0660, st_rdev=makedev(195, 255), ...}) = 0 openat(AT_FDCWD, "/dev/nvidiactl", O_RDWR) = 9 fcntl(9, F_SETFD, FD_CLOEXEC) = 0 ioctl(9, _IOC(_IOC_READ|_IOC_WRITE, 0x46, 0xd2, 0x48), 0x7ffccf633c20) = -1 EINVAL (Invalid argument) close(9) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=NULL} --- +++ killed by SIGSEGV (core dumped) +++ Segmentation fault (core dumped)
Catching system calls with strace isn't very useful. You should run it in gdb instead.
It looks like the problem is in a library, possibly one that is from nvidia-drivers or related to it.
Is is now working with kernel 4.19.9, and nvidia-drivers-415.23. Sorry for the noise.
