Ubuntu 15 的random Crash ? - Linux

想問一下使用Ubuntu 15 的各位有沒有遇到這種狀況
操作到一半會無緣無故突然跳掉,我在剛安裝使用那幾
天有遇過幾次,後來系統一些東西設定好後還是偶而會
有, google到國外有人提過它們也遇到但還是不知道
原因所以它們說是 randomly crash

我個人操作時,覺得最頻繁發生在windows spread時
我上班的地方本身是有雙螢幕慢慢發現有外接螢幕時
使用spread也很頻繁

最近一次接投影機更在很短的時間內crash了4~5次以上
好險小弟的嘴巴沒在停的,加上Ubuntu重開機速度超快
不然meeting在老闆面前炸了四五次超尷尬

想請教一下有沒有有類似經驗的大大,已經解掉了這個
問題,能教怎麼解它 ？

ps: 各位抱歉 ！！！ 難得可以連看到5次crash但小弟
要carry住老闆,沒辦法記畫面上的crash Message
畫面一暗要立刻開始跟老闆討論然後一有畫面立刻
快捷鍵把該有的東西全部開完,心臟都快炸了

=============補 xsession-errors=================
openConnection: connect: 沒有此一檔案或目錄
cannot connect to brltty at :0
upstart: upstart-event-bridge main process (22462) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22468) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22483) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22488) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22520) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22552) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22567) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22572) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22575) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22578) terminated with status 1
upstart: upstart-event-bridge main process ended, respawning
upstart: upstart-event-bridge main process (22579) terminated with status 1
upstart: upstart-event-bridge respawning too fast, stopped

================================================

--