我有一个运行 Raspbian 的 Raspberry Pi。在启动日志的末尾，我看到此错误。我相信它已经存在了一段时间，但我不确定它可能意味着什么。
kernel: bcm2708_fb soc:fb: Unknown ioctl 0x40187a22
它包含在lightdm.这是日志部分：
Nov 27 13:20:30 raspberrypi lightdm[619]: ** (lightdm:619): WARNING **: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedeskt
Nov 27 13:20:30 raspberrypi systemd[1]: Started Light Display Manager.
Nov 27 13:20:31 raspberrypi kernel: bcm2708_fb soc:fb: Unknown ioctl 0x40187a22
Nov 27 13:20:31 raspberrypi kernel: cfg80211: Calling CRDA to update world regulatory domain
Nov 27 13:20:32 raspberrypi lightdm[619]: ** (process:670): WARNING **: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedeskt
Nov 27 13:20:32 raspberrypi lightdm[670]: pam_unix(lightdm-autologin:session): session opened for user XX by (uid=0)
我也许应该注意到默认用户pi不再存在，为什么lightdm可能会抱怨为uid=0.