Ubuntu 14 LTS 在LogOut後 Crash - Linux

我前兩天將Linux換成 14 的 LTS 除了剛開使沒WiFi可用外
其他都還算穩定,約莫在昨晚更新了WiFi Driver讓WiFi復活
之後有登出一次,沒什麼大礙,但昨晚蓋上電腦後今天打開出現
快淹出來的Consle 畫面

我查國外論壇有看到有人討論 WiFi Driver 造成的 Null Pointer
不過主要都看到在秀 erro Message 所以我還是不太知道要怎麼修復
這個問題 ,提供一些資料給各位大大參考 , 我待會會繼續測試有哪些
error 如果還有什麼需要的資訊也請各位大大告訴我

感謝

============sudo dmesg kern | grep failed======================

[ 1.007090] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[ 1.063927] pci 0000:01:00.0: BAR 6: failed to assign [mem size 0x00080000
pref]
[ 1.403588] ACPI PCC probe failed.
[ 12.147680] [drm] failed to retrieve link info, disabling eDP
[ 12.254556] bluetooth hci0: Direct firmware load for
brcm/BCM20702A0-0a5c-21f3.hcd failed with error -2
[ 12.886237] wl: module verification failed: signature and/or required key
missing - tainting kernel
[ 17.799107] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
[ 25.872406] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM

===============syslog 只有取紅字====================
第一次當機有的紅字：
wlan0 Scan_results error (-22)

第二次蓋上重開：
kernel: [ 1.007086] _OSC request data:1 1f 0
kernel: [ 1.007090] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
kernel: [ 1.063927] pci 0000:01:00.0: BAR 6: failed to assign [mem size
0x00080000 pref]
kernel: [ 1.403588] ACPI PCC probe failed.
kernel: [ 12.254556] bluetooth hci0: Direct firmware load for
brcm/BCM20702A0-0a5c-21f3.hcd failed with error -2
kernel: [ 12.886237] wl: module verification failed: signature and/or
required key missing - tainting kernel
kernel: [ 15.154773] EXT4-fs (sda7): re-mounted. Opts: errors=remount-ro
kernel: [ 17.799107] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
NetworkManager[883]: <warn> failed to allocate link cache: (-12) Object not
found
kernel: [ 25.872406] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
NetworkManager[883]: get_secret_flags: assertion 'is_secret_prop (setting,
secret_name, error)' failed
wpa_supplicant[941]: wlan0: WPA: 4-Way Handshake failed - pre-shared key may
be incorrect
NetworkManager[883]: get_secret_flags: assertion 'is_secret_prop (setting,
secret_name, error)' failed
NetworkManager[883]: <error> [1454198076.961191] [nm-dns-dnsmasq.c:396]
update(): dnsmasq owner not found on bus: Could not get owner of name
'org.freedesktop.NetworkManager.dnsmasq': no such name
NetworkManager[883]: <warn> DNS: plugin dnsmasq update failed


=============xsession-errors=================

ibus 使用的 script 從 run_im 啟動。
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd main process ended, respawning
init: at-spi2-registryd respawning too fast, stopped



ps: 我剛 repeat 一次 crash , 是在google chrome 開啟
Netflix 網路電影服務時,直接關上筆電讓他自動logout的話
會crash , 而 chrome 沒有開啟的狀態可以正常logOut

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