# Pppd always fails after modem reset **URL:** \ **Category:** HL78\ **Created:** [September 25, 2022, 12:47pm UTC](https://forum.sierrawireless.com/t/pppd-always-fails-after-modem-reset/27961 "2022-09-25T12:47:28Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 25, 2022, 1:06pm UTC](https://forum.sierrawireless.com/t/pppd-always-fails-after-modem-reset/27961/2 "2022-09-25T13:06:22Z")
do you have the chat log? There should be no problem for dial up: > [@HL78xx ttyACM1 PPP port doesn't respond (LCP: timeout sending Config-Requests)](https://forum.sierrawireless.com/t/hl78xx-ttyacm1-ppp-port-doesnt-respond-lcp-timeout-sending-config-requests/24745/12): > > no problem is found for dial up in ubuntu 12 using usb /dev/ttyACM1 port with FW 4.6.8.0: Cowner@ubuntu:~$ sudo wvdial → WvDial: Internet dialer version 1.61 → Initializing modem. → Sending: AT AT OK → Modem initialized. → Sending: ATDT991# → Waiting for carrier. A CONNECT TDT99\*\*1# → Carrier detected. Waiting for prompt. ~[7f]}#@!}!}!} }8}!}$}%[14]}"}&} } } } }%}&)Inb}’}"}(}"[q~ → PPP negotiation detected. → Starting pppd at Wed Sep 1 16:28:58 2021 → Pid of pppd: 35… > [@HL7800 as a network interface in Linux](https://forum.sierrawireless.com/t/hl7800-as-a-network-interface-in-linux/20224/14): > > Hi, I tried with all three devices and also with “ATD\*99\*\*\*3#” but still not seeing any ppp0 interface. We are using CAT-M1 if that makes any difference. Best Regards Jesper --- _[View the full topic](https://forum.sierrawireless.com/t/pppd-always-fails-after-modem-reset/27961)._