0002699: Fails to resolve server after laptop resumed from suspend

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Date Submitted

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0002699

gmpc

Usability

public

2009-11-25 04:41

2010-08-19 04:42

Reporter

bigpresh

Assigned To

qball

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

not fixable

Platform

OS Version

Product Version

Target Version

Fixed in Version

Summary

0002699: Fails to resolve server after laptop resumed from suspend

Description

Whenever I suspend my laptop, when I wake it back up, if I tell GMPC to connect, it will claim to be unable to resolve the hostname, showing the message:

error code 12: hsst "supernova" not found: Temporary failure in name resolution

Everything else can successfully resolve the name still, though, and if I exit GMPC then start it back up, it works fine.

Attaching to the process with strace reveals that it is continually trying to read from a socket, presumably the old (now-dead) connection:

read(3, 0x9178d4, 4096) = -1 EAGAIN (Resource temporarily unavailable)

(repeated over and over)

[davidp@masterplan:~]$ ls -lh /proc/30050/fd/3
lrwx------ 1 davidp users 64 2009-11-25 09:38 /proc/30050/fd/3 -> socket:[1187638]

It looks like GMPC needs to handle connections that go away more cleanly.

If I can be of any assistance providing further info (perhaps running GMPC via strace from the start, and providing a full log of all the syscalls it was making both before and after the laptop was suspended, please do let me know!

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Notes
(0005016) bigpresh (reporter) 2009-11-25 04:44	I should add that this is using verson 0.19.1 (unable to select that version from the product version drop-down; raised a separate issue for that).

(0005018) qball (administrator) 2009-11-25 07:20	Can you give me more information about your system? it works here like this: gmpc running <suspend> <un suspend> gmpc disconnects, tries to reconnect. First time fails because it was before network got back up. 2nd time success. I can reproduce this on 3 machines. Desktop PC, netbook and laptop. It also works on my mac mini, but that is osX and does not count.

(0005040) bigpresh (reporter) 2009-11-27 06:56	I will attempt to get more useful info over the weekend, but this is on a Dell Inspiron 1501, running Arch Linux. I'll start strace'ing GMPC, then suspend & unsuspend, and see if there's any useful clues in the logs.

Issue History
Date Modified	Username	Field	Change
2009-11-25 04:41	bigpresh	New Issue
2009-11-25 04:41	bigpresh	Status	new => assigned
2009-11-25 04:41	bigpresh	Assigned To	=> qball
2009-11-25 04:44	bigpresh	Note Added: 0005016
2009-11-25 07:20	qball	Note Added: 0005018
2009-11-27 06:56	bigpresh	Note Added: 0005040
2010-08-19 04:42	qball	Status	assigned => closed
2010-08-19 04:42	qball	Resolution	open => not fixable