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

asked 2013-12-29 14:46:29 +0200

Sailor gravatar image

updated 2013-12-29 14:51:02 +0200

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
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The question has been closed for the following reason "question is not relevant or outdated" by Sailor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 +0200 )edit

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 +0200 )edit

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 +0200 )edit

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 +0200 )edit

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 +0200 )edit