最近安装了Ubuntu 13.04 64位版，发现有线连接经常会掉线，通常在连接上一段时间（或长或短）就无法上网，ping不通，但是ifconfig显示一切正常，重启NetworkManager也不行，必须拔掉网线重新插上才行，但是过一会依然会掉线。无线连接正常，在12.04/12.10下也没遇到过这个问题，请问该怎么解决呢？
我在launchpad.net上发了提问帖，里面有人建议我提交bug
于是我发了这个：https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1176370 ，
目前是Confirmed 状态，但重要性什么的还没有评估，bug热度值是6。
如果你们有launchpad.net帐号(或者能不能顺手注册一个？)的话，不妨点进去上面给出的链接，点一下"this bug affects me"，表明你也受这个bug影响，可以提升bug的热度(每影响多一个人，热度+6)，也能够尽快引起ubuntu开发人员注意，尽早修复这个bug。
目前已确认是Linux内核（版本号3.7~3.9）的bug，所以12.10（Linux内核3.5）及之前的版本都没这个问题。
我已在Ubuntu在线开发社区平台launchpad提交bug report，bug report所在地址：https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1176370
如果你也受此bug影响，请注册Launchpad，进入上述bug的帖子地址，点击This bug affects ** people. Does this bug affect you?——>Yes, it affects me.以表明你也受该bug影响。
这样可以提高该bug的影响度，让Ubuntu及Linux内核的开发人员及早在下个内核版本的开发中修复这个bug。
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Luis Henriques (henrix) wrote on 2013-08-22:
#29
I've uploaded a Raring kernel containing the fix for this issue with the atl1c device driver here:
http://people.canonical.com/~henrix/lp1173279/
Feel free to use until the fix actually hits the Ubuntu Raring kernel. I'll update this bug when this happens.
Timmie (timmie) wrote on 2013-08-26:
#31
@Luis:
I installed your kenel packages yesterday.
My connection is up & running fine this morning !
Annoyance is stopped.
Thanks.
I hope that they'll add them to the ofical repos, too.
Luis Henriques (henrix) wrote on 2013-08-26:
#32
Thanks a lot for testing this.
Mathew Roy: I've uploaded a 32bits version of the kernel here: http://people.canonical.com/~henrix/lp1173279/i386/
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Stefano Pecchenino (pekke) wrote on 2013-09-18:
#36
RISOLTO !!
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc4-saucy/linux-headers-3.11.0-031100rc4_3.11.0-031100rc4.201308041735_all.deb
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc4-saucy/linux-headers-3.11.0-031100rc4-generic_3.11.0-031100rc4.201308041735_i386.deb
wget -c kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc4-saucy/linux-image-3.11.0-031100rc4-generic_3.11.0-031100rc4.201308041735_i386.deb
sudo dpkg -i *.deb
Luis Henriques (henrix) wrote on 2013-10-01:
#37
Since the Raring kernel currently in -updates (3.8.0-31.46) already contains the fix for this bug, I'm changing this bug to 'Fix-released'.
Changed in linux (Ubuntu):
status:
Incomplete → Fix Released