QMI modem Olivetti Techcenter (0b3c:c00a) freezes on uqmi --sync call (never connects)
Username: Luiz Angelo Daros de Luca
Origin: https://bugs.openwrt.org/index.php?do=details&task_id=527
Hello,
I used to use modem Olivetti Techcenter (0b3c:c00a) on OpenWRT CC.1 without problems.
However, testing on LEDE 17.01.0-rc2, I’m unable to connect.
I traced the problem to ‘uqmi -s -d “$device” –sync’ at
.
My config is simple as:
config interface 'wwan' option ifname 'wwan0' option proto 'qmi' option device '/dev/cdc-wdm0' option apn 'gprs.oi.com.br' option auth 'none'
Using strace, it always stops at this point:
... open("/dev/cdc-wdm0", O_RDWR|O_EXCL|O_NOCTTY|O_NONBLOCK|O_LARGEFILE) = 6 fcntl64(6, F_GETFL) = 0x2082 (flags O_RDWR|O_NONBLOCK|O_LARGEFILE) fcntl64(6, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE) = 0 epoll_ctl(3, EPOLL_CTL_ADD, 6, {EPOLLIN|EPOLLRDHUP|EPOLLET, {u32=4305304, u64=18491139879337984}}) = 0 write(6, "\1\v\0\0\0\0\0\1'\0\0\0", 12) = 12 rt_sigaction(SIGINT, NULL, {sa_handler=0x401071, sa_mask=[RT_66 RT_67 RT_68 RT_69 RT_70 RT_71], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0}, 16) = 0 rt_sigaction(SIGTERM, NULL, {sa_handler=0x401071, sa_mask=[RT_66 RT_67 RT_68 RT_69 RT_70 RT_71], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0}, 16) = 0 rt_sigaction(SIGCHLD, NULL, {sa_handler=SIG_DFL, sa_mask=[RT_66 RT_67 RT_68 RT_69 RT_70 RT_71], sa_flags=0}, 16) = 0 rt_sigaction(SIGCHLD, {sa_handler=0x77d85541, sa_mask=[RT_68 RT_69 RT_73 RT_74 RT_75 RT_76 RT_78 RT_80 RT_82 RT_84 RT_85 RT_87 RT_88 RT_89 RT_90 RT_91 RT_93 RT_94 RT_95], sa_flags=SA_RESTORER, sa_restorer=0}, NULL, 16) = 0 rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_DFL, sa_mask=[RT_65 RT_68 RT_70], sa_flags=0}, 16) = 0 rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[RT_68 RT_69 RT_73 RT_74 RT_75 RT_76 RT_78 RT_80 RT_82 RT_84 RT_85 RT_87 RT_88 RT_89 RT_90 RT_91 RT_93 RT_94 RT_95], sa_flags=SA_RESTORER, sa_restorer=0}, NULL, 16) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=7909, tv_nsec=543507701}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=7909, tv_nsec=544052152}) = 0 epoll_pwait(3,
If I comment the “uqmi –sync” call, it simply works. “–sync” is a new action for uqmi since OpenWRT CC.1
My System is:
LEDE 17.01.0-rc2, r3131-42f3c1fe
uqmi 2016-12-19-8ceeab69-1
machine: TP-LINK TL-WDR3600/4300/4310 (ar71xx) with QMI modem Olivetti Techcenter (0b3c:c00a)