Arch Linux

scrawky

Member

Registered: 2011-09-23

Posts: 26

[solved] wifi drops regularly, just started happening

After being away for nearly 2 weeks, this past Monday I pacman -Syu'd and updated chromium, some xorg stuff, and linux to 3.2.13-1.

Now I'm noticing that with regularity my wifi is dropping completely.  It can happen twice in 5 minutes then not happen for an hour.  It's completely sporadic.

To reconnect I must pkill dhcpcd and wpa_supplicant, then run my wifi shell script.  However, when I add "pkill dhcpcd" and "pkill wpa_supplicant" to the top of my wifi script (to make the process faster) I get the following error:

dhcpcd[14965]: version 5.5.5 starting
dhcpcd[14965]: wlan0: waiting for carrier
dhcpcd[14965]: wlan0: carrier acquired
dhcpcd[14965]: wlan0: sending IPv6 Router Solicitation
dhcpcd[14965]: wlan0: sendmsg: Cannot assign requested address
dhcpcd[14965]: wlan0: rebinding lease of 192.168.0.197
dhcpcd[14965]: wlan0: carrier lost
dhcpcd[14965]: wlan0: carrier acquired
*** glibc detected *** dhcpcd: double free or corruption (fasttop): 0x0000000001894a50 ***
======= Backtrace: =========
/lib/libc.so.6(+0x78a56)[0x7f8587a31a56]
dhcpcd[0x40cdd0]
dhcpcd[0x40e597]
dhcpcd[0x4093f0]
dhcpcd[0x411ba7]
dhcpcd[0x411563]
dhcpcd[0x40768f]
dhcpcd[0x40aa6b]
dhcpcd[0x4028a8]
/lib/libc.so.6(__libc_start_main+0xf5)[0x7f85879da455]
dhcpcd[0x402d1d]
======= Memory map: ========
00400000-00419000 r-xp 00000000 08:03 2940970                            /sbin/dhcpcd
00619000-0061a000 r--p 00019000 08:03 2940970                            /sbin/dhcpcd
0061a000-0061b000 rw-p 0001a000 08:03 2940970                            /sbin/dhcpcd
0061b000-0061c000 rw-p 00000000 00:00 0 
01893000-018b5000 rw-p 00000000 00:00 0                                  [heap]
7f8587588000-7f858759d000 r-xp 00000000 08:03 2007432                    /usr/lib/libgcc_s.so.1
7f858759d000-7f858779c000 ---p 00015000 08:03 2007432                    /usr/lib/libgcc_s.so.1
7f858779c000-7f858779d000 rw-p 00014000 08:03 2007432                    /usr/lib/libgcc_s.so.1
7f858779d000-7f85877b4000 r-xp 00000000 08:03 5521415                    /lib/libpthread-2.15.so
7f85877b4000-7f85879b3000 ---p 00017000 08:03 5521415                    /lib/libpthread-2.15.so
7f85879b3000-7f85879b4000 r--p 00016000 08:03 5521415                    /lib/libpthread-2.15.so
7f85879b4000-7f85879b5000 rw-p 00017000 08:03 5521415                    /lib/libpthread-2.15.so
7f85879b5000-7f85879b9000 rw-p 00000000 00:00 0 
7f85879b9000-7f8587b50000 r-xp 00000000 08:03 5521448                    /lib/libc-2.15.so
7f8587b50000-7f8587d50000 ---p 0006000 08:03 5521418                    /lib/librt-2.15.so
7f8587f61000-7f8587f62000 rw-p 00007000 08:03 5521418                    /lib/librt-2.15.so
7f8587f62000-7f8587f83000 r-xp 00000000 08:03 5521595                    /lib/ld-2.15.so
7f858816b000-7f858816f000 rw-p 00000000 00:00 0 
7f8588181000-7f8588183000 rw-p 00000000 00:00 0 
7f8588183000-7f8588184000 r--p 00021000 08:03 5521595                    /lib/ld-2.15.so
7f8588184000-7f8588185000 rw-p 00022000 08:03 5521595                    /lib/ld-2.15.so
7f8588185000-7f8588186000 rw-p 00000000 00:00 0 
7fffc6933000-7fffc6954000 rw-p 00000000 00:00 0                          [stack]
7fffc69ff000-7fffc6a00000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
/home/route/bash/wifi.sh: line 6: 14965 Aborted                 dhcpcd wlan0197000 08:03 5521448                    /lib/libc-2.15.so
7f8587d50000-7f8587d54000 r--p 00197000 08:03 5521448                    /lib/libc-2.15.so
7f8587d54000-7f8587d56000 rw-p 0019b000 08:03 5521448                    /lib/libc-2.15.so
7f8587d56000-7f8587d5a000 rw-p 00000000 00:00 0 
7f8587d5a000-7f8587d61000 r-xp 00000000 08:03 5521418                    /lib/librt-2.15.so
7f8587d61000-7f8587f60000 ---p 00007000 08:03 5521418                    /lib/librt-2.15.so
7f8587f60000-7f8587f61000 r--p 00006000 08:03 5521418                    /lib/librt-2.15.so
7f8587f61000-7f8587f62000 rw-p 00007000 08:03 5521418                    /lib/librt-2.15.so
7f8587f62000-7f8587f83000 r-xp 00000000 08:03 5521595                    /lib/ld-2.15.so
7f858816b000-7f858816f000 rw-p 00000000 00:00 0 
7f8588181000-7f8588183000 rw-p 00000000 00:00 0 
7f8588183000-7f8588184000 r--p 00021000 08:03 5521595                    /lib/ld-2.15.so
7f8588184000-7f8588185000 rw-p 00022000 08:03 5521595                    /lib/ld-2.15.so
7f8588185000-7f8588186000 rw-p 00000000 00:00 0 
7fffc6933000-7fffc6954000 rw-p 00000000 00:00 0                          [stack]
7fffc69ff000-7fffc6a00000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
/home/route/bash/wifi.sh: line 6: 14965 Aborted                 dhcpcd wlan0

Does anyone know why this is happening?

Last edited by scrawky (2012-04-06 19:29:09)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,939

Re: [solved] wifi drops regularly, just started happening

Not a fix, but maybe a workaround, definitely a data point -- What happens if you use dhclient instead of dhcpcd ??

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scrawky

Member

Registered: 2011-09-23

Posts: 26

Re: [solved] wifi drops regularly, just started happening

Not a fix, but maybe a workaround, definitely a data point -- What happens if you use dhclient instead of dhcpcd ??

trying it now

scrawky

Member

Registered: 2011-09-23

Posts: 26

Re: [solved] wifi drops regularly, just started happening

ok its been four hours and im still online, im marking this solved. thank you ewaller