<div dir="ltr"><div>Hello,</div><div> </div><div>I am working with ModemManager with qmi-proxy and I have a weird behavior when I am using ModemManager with the log-level set to DEBUG like this "ModemManager --log-level=DEBUG &" </div><div>everything is working fine but when I use it normally or set the log-level to anything else except debug I have "modem is unusable" </div><div>Here are the logs : <debug> [modem2] cleaning up port 'net/mhi_hwip0'... <debug> [modem2] cleaning up port 'unknown/wwan0qcdm0'... <debug> [modem2] cleaning up port 'tty/ttyUSB2'... <debug> [modem2] cleaning up port 'wwan/wwan0qmi0'... <debug> [modem2] cleaning up port 'unknown/wwan0mbim0'... <debug> [ttyUSB2/at] forced to close port <debug> [modem2] (quectel) check SIM swap completed <debug> [modem2] completely disposed <debug> [device SG520TM] Reprobing modem... <info> [device SG520TM] creating modem with plugin 'quectel' and '5' ports <debug> [plugin/quectel] (quectel) QMI-powered Quectel modem found... <debug> [wwan0qmi0/qmi] timeout monitoring enabled in QMI port <debug> [modem3] port 'wwan/wwan0qmi0' grabbed <debug> [plugin/quectel] port wwan0qcdm0 is blacklisted <debug> [modem3] port 'wwan/wwan0qcdm0' grabbed <debug> [plugin/quectel] port wwan0mbim0 is blacklisted <debug> [modem3] port 'wwan/wwan0mbim0' grabbed <debug> [modem3] port 'net/mhi_hwip0' grabbed <debug> [ttyUSB2/at] timeout monitoring enabled in AT port <debug> [ttyUSB2/at] AT port flagged as primary <debug> [modem3] port 'tty/ttyUSB2' grabbed <debug> [modem3] tty/ttyUSB2 at (primary) <debug> [modem3] tty/ttyUSB2 at (data primary) <debug> [modem3] net/mhi_hwip0 net (data) <debug> [modem3] wwan/wwan0qmi0 qmi <debug> [modem3] at data ports available but ignored <debug> [wwan0qmi0/qmi] endpoint info updated: type 'pcie', interface number '0' <debug> [modem3] running QMI port 'wwan0qmi0' reset with data interface 'mhi_hwip0' <debug> [device SG520TM] modem recreated <debug> [wwan0qmi0/qmi] bringing down data interface 'mhi_hwip0' <debug> [modem3/mhi_hwip0/net] interface index: 2 <debug> [wwan0qmi0/qmi] deleting all links in data interface 'mhi_hwip0' <debug> [wwan0qmi0/qmi] Opening QMI device... <debug> [wwan0qmi0/qmi] Checking if QMI device already opening... <debug> [wwan0qmi0/qmi] Checking if QMI device already open... <debug> [wwan0qmi0/qmi] Creating QMI device... <debug> [wwan0qmi0/qmi] Opening device with flags: version-info, proxy... <debug> [/dev/wwan0qmi0] opening device with flags 'version-info, proxy'... <debug> [/dev/wwan0qmi0] created endpoint <debug> [/dev/wwan0qmi0] sent message... <<<<<< RAW: <<<<<< length = 29 <<<<<< data = 01:1C:00:00:00:00:00:01:00:FF:11:00... <debug> [/dev/wwan0qmi0] sent generic request (translated)... <<<<<< QMUX: <<<<<< length = 28 <<<<<< flags = 0x00 <<<<<< service = "ctl" <<<<<< client = 0 <<<<<< QMI: <<<<<< flags = "none" <<<<<< transaction = 1 <<<<<< tlv_length = 17 <<<<<< message = "Internal Proxy Open" (0xFF00) <<<<<< TLV: <<<<<< type = "Device Path" (0x01) <<<<<< length = 14 <<<<<< value = 2F:64:65:76:2F:77:77:61:6E:30:71:6D:69:30 <<<<<< translated = /dev/wwan0qmi0 <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 1 <debug> [/dev/wwan0qmi0] transaction 0xf aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 2 <debug> [/dev/wwan0qmi0] transaction 0x10 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 3 <debug> [/dev/wwan0qmi0] transaction 0x11 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 4 <debug> [/dev/wwan0qmi0] transaction 0x12 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 5 <debug> [/dev/wwan0qmi0] transaction 0x13 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 6 <debug> [/dev/wwan0qmi0] transaction 0x14 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 7 <debug> [/dev/wwan0qmi0] transaction 0x15 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 8 <debug> [/dev/wwan0qmi0] transaction 0x16 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 9 <debug> [/dev/wwan0qmi0] transaction 0x17 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 10 <debug> [/dev/wwan0qmi0] transaction 0x18 aborted, but message is not abortable <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 1 <debug> [/dev/wwan0qmi0] transaction 0x1 aborted, but message is not abortable <debug> [wwan0qmi0/qmi] QMI port open operation failed: Transaction timed out <debug> [modem3] couldn't open QMI port with data format update: Transaction timed out <debug> [wwan0qmi0/qmi] Opening QMI device... <debug> [wwan0qmi0/qmi] Checking if QMI device already opening... <debug> [wwan0qmi0/qmi] Checking if QMI device already open... <debug> [wwan0qmi0/qmi] Creating QMI device... <debug> [wwan0qmi0/qmi] Opening device with flags: version-info, proxy... <debug> [/dev/wwan0qmi0] opening device with flags 'version-info, proxy'... <debug> [/dev/wwan0qmi0] created endpoint <debug> [/dev/wwan0qmi0] sent message... <<<<<< RAW: <<<<<< length = 29 <<<<<< data = 01:1C:00:00:00:00:00:01:00:FF:11:00... <debug> [/dev/wwan0qmi0] sent generic request (translated)... <<<<<< QMUX: <<<<<< length = 28 <<<<<< flags = 0x00 <<<<<< service = "ctl" <<<<<< client = 0 <<<<<< QMI: <<<<<< flags = "none" <<<<<< transaction = 1 <<<<<< tlv_length = 17 <<<<<< message = "Internal Proxy Open" (0xFF00) <<<<<< TLV: <<<<<< type = "Device Path" (0x01) <<<<<< length = 14 <<<<<< value = 2F:64:65:76:2F:77:77:61:6E:30:71:6D:69:30 <<<<<< translated = /dev/wwan0qmi0 <debug> [/dev/wwan0qmi0] number of consecutive timeouts: 1 <debug> [/dev/wwan0qmi0] transaction 0x1 aborted, but message is not abortable <debug> [wwan0qmi0/qmi] QMI port open operation failed: Transaction timed out <warn> [modem3] couldn't start initialization: Transaction timed out <error> [modem3] fatal error initializing: Fatal error: modem is unusable </div><div>Thanks for the help </div><div>Best regards, </div></div>