Jolla does sometimes not respond to arp requests [not relevant]

asked 2013-12-29 14:46:29 +0300

Sailor gravatar image

updated 2013-12-29 14:51:02 +0300

Hi everybody,

I experience a problem with my Jolla since latest update. I cannot ping or ssh my phone from my workstations until I pinged from Jolla to the workstation. Even when screen is on and emails are checked.

I watched tcpdump and arp entries and Jolla does not respond to arp requests. And it needs about 9 pings until arp is correctly installed in the workstations arp table. I tried it with different workstations and it's always the same. Only the default gateway is able to ping the Jolla on first try and has arp entry in table.

bash-3.2$ tcpdump -n -i en1 host 192.168.0.11
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on en1,link-type EN10MB (Ethernet), capture size 65535 bytes 
13:48:14.913948 ARP, Request who-has 192.168.0.11 tell 192.168.0.118, length 28 
13:48:15.915029 ARP, Request who-has 192.168.0.11 tell 192.168.0.118, length 28
13:48:16.916154 ARP, Request who-has 192.168.0.11 tell 192.168.0.118, length 28

The question has been closed for the following reason "question is not relevant or outdated" by Sailor
close date 2015-02-26 13:42:56.638741

Comments

1

I think that is related with the power management, the wlan module does not wake up the phone immediately if it's in sleep mode?

Kontio ( 2013-12-29 14:54:00 +0300 )

This could be the issue. But it's very annoying when trying some things in developer mode and phone starts to sleep because of googling something. And you have to wait 1-2mins until you can connect once again. I do now a workaround and let the phone ping the workstation all the time.

Sailor ( 2013-12-29 14:59:22 +0300 )

All Sailors I know use the usb-net to login in to the device and develop/debug on device etc, then the device also does not go to sleep mode (if usb wire is plugged in).

Kontio ( 2013-12-29 15:06:37 +0300 )

Would be cool to use usb. But we have a little restriction in adding usb devices at work ;).

Sailor ( 2013-12-29 15:07:32 +0300 )

seems this might be even a duplicate of https://together.jolla.com/question/5029/bug-shaky-ssh-connection-via-wlan/?answer=5179#post-id-5179 with a work around.

Kontio ( 2013-12-29 15:14:04 +0300 )
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