麒麟系统图形卡死问题分析

2026/8/4 5:01:02 拓冰建站浏览量

问题现象

飞腾平台麒麟系统，qt图形应用软件运行若干天后，桌面图形卡住鼠标键盘点击无响应。

问题分析

桌面任务栏时间刷新正常，表明桌面显示应该是正常的。xserver总体正常。
xdpyinfo显示当前focus 窗口，screen信息，扩展信息等，表明display相关正常。
使用xwininfo显示focus窗口为”SmartIC”用户程序窗口。
使用xprop显示”SmartIC”窗口更多窗口管理状态等信息，正常。
通过应用接口来控制窗口，失败。表明应用去跟xserver通信异常，不过中间还要过一道窗口管理器，所以进一步分析窗口管理器与xserver间的通信是否有问题。
通过wmctrl(窗口管理器相关)操作窗口，发现能进行窗口置顶等操作，但窗口无法进行焦点输入操作，表明窗口管理器并未完全失去窗口的控制。
使用XGetInputFocus查看input focus窗口正常。

分析日志，发现三月一号在屏保之后显示图形时，在操作时，所有窗口都报出问题，截图如下:

明显发现timestamp有问题，部分时间戳对比不符合常理，看起来似乎有溢出，如:

在社区发现类似问题，如下:

GUI hangs when system is up for (multiple of) 50 days

When uptime crosses a multiple of 2^32 milliseconds (~49.7 days), windows stop responding to keyboard and mouse events. Restarting X clears the problem (until the uptime passes another ~49.7 days). This was originally observed with gnome-session, but it is also observable in mutter, and the latter was easier to test.

Here is my basic testing process. As it is difficult to manipulate the system's monotonic clock, I used a hacked version of the Xorg server that would use "wall" time for its clock instead of the system's monotonic clock. With this "wall" clock, an overflow/wrap-around event occurs around Jan 16 2018 17:24:15 UTC.

Set the date to a few minutes before the overflow time
Start up [hacked] Xorg
Start up mutter
Start up a couple of regular X clients (e.g. xterm, xlogo)
Hit Alt-Tab several times to switch between windows
Wait fot the clock overflow event to pass
Hit Alt-Tab several times to switch between windows

建站实战干货

麒麟系统图形卡死问题分析

GUI hangs when system is up for (multiple of) 50 days