[已解决]无线网络导致的死机，我真的没办法了，求救

zhaoganghit

刚买了一个本，第一时间安装gentoo，发现好多问题。

刚开始无论如何startx都无法启动，后来在gentoo官方论坛搜到，AMD的显卡HD6470M，2.6.38一下的内核不支持。后来更新内核后终于可以用gnome了，

可是又发现无线网络连不上，又google，最后发现是内核没配置好，再配置内核，重启，能连上无线网络了，

可是最大的问题来了，只要连上无线，必然在2分钟内死机。

硬件信息：
01:00.1 Audio device: ATI Technologies Inc Device aa98
03:00.0 Ethernet controller: Atheros Communications Inc. AR5001 Wireless Network Adapter (rev 01)
07:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 80)
07:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 80)
07:00.5 Ethernet controller: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller (rev 03)

死机前最后的20行日志是：

Apr 12 09:49:43 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  associating -> disconnected
Apr 12 09:49:43 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  disconnected -> scanning
Apr 12 09:49:44 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  scanning -> associating
Apr 12 09:49:49 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  associating -> disconnected
Apr 12 09:49:49 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  disconnected -> scanning
Apr 12 09:49:50 gentoo NetworkManager[1790]: <info> (wlan0): supplicant connection state:  scanning -> associating
Apr 12 09:49:50 gentoo kernel: wlan0: deauthenticating from 06:60:b3:c9:72:d8 by local choice (reason=3)
Apr 12 09:49:50 gentoo kernel: wlan0: authenticate with 06:60:b3:c9:72:d8 (try 1)
Apr 12 09:49:50 gentoo kernel: wlan0: deauthenticating from 06:60:b3:c9:72:d8 by local choice (reason=3)
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> (wlan0): device state change: 8 -> 3 (reason 11)
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> (wlan0): deactivating device (reason: 11).
Apr 12 09:49:51 gentoo dhcpcd[2440]: received SIGTERM, stopping
Apr 12 09:49:51 gentoo dhcpcd[2440]: wlan0: removing interface
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 2440
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> Updating /etc/hosts with new system hostname
Apr 12 09:49:51 gentoo NetworkManager[1790]: <error> [1302572991.585552] [nm-device-wifi.c:1544] nm_device_wifi_set_mode(): (wlan0): error setting mode 2
Apr 12 09:49:51 gentoo NetworkManager[1790]: <warn> (pid 2440) unhandled DHCP event for interface wlan0
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> Activation (wlan0) starting connection 'Auto CMCC-EDU'
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> (wlan0): device state change: 3 -> 4 (reason 0)
Apr 12 09:49:51 gentoo NetworkManager[1790]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...

zhaoganghit

另外，我以为是内核的问题，就安装了arch，无线没问题，
用arch的内核和modules启动gentoo，连上无线后一样死机。

所以可以确定是其他软件的问题，不是内核的问题。
请问到底是哪里的问题？

zhaoganghit

我估计是net-wireless/wpa_supplicant 或者是net-misc/networkmanager 的问题，可是怎么确定呢

zhaoganghit

死机的症状是，内核完全死亡，连sysrq都不能用，笔记本不能重启，只能直接断电

zhaoganghit

问题解决

应该是某个软件版本太新引起的bug，具体不知道，不想折腾。

说一下我的解决办法，免得其他人遇到。

我把gcc从4.5.2降到4.4.5，然后重新编译内核，然后把wpa_supplicant、dhcpcd、networkmanager都降到稳定版本，然后就可以了。

iamkr

想折腾的话可以配好syslog 然后重启后看死机前最后几条kernel message是什么。。