从 Ubuntu 16.04 升级到 18.04，如果文件超过 512Kb，则无法将文件从我的 PC 复制到连接到路由器的 USB。我可以从路由器上的 USB 复制到我的 PC，没有任何问题。我收到的消息说网络正在重置。
根据请求提供其他信息：
adam@adam-desktop:~$ journalctl --since="- 10 minutes"
-- Logs begin at Tue 2018-10-02 13:27:30 CDT, end at Mon 2019-05-06 12:11:20 CDT
May 06 12:01:33 adam-desktop systemd-resolved[546]: Grace period over, resuming
May 06 12:01:33 adam-desktop systemd-resolved[546]: Using degraded feature set (
May 06 12:10:20 adam-desktop gnome-shell[1231]: JS WARNING: [resource:///org/gno
May 06 12:10:20 adam-desktop gnome-shell[1231]: JS ERROR: Exception in callback
getCurrentRect@resource:///org/g
wrapper@resource:///org/gnome/gj
_onFocusPositionChanged@resource
wrapper@resource:///org/gnome/gj
_emit@resource:///org/gnome/gjs/
_setCurrentWindow/this._currentW
May 06 12:11:20 adam-desktop dbus-daemon[1008]: [session uid=1000 pid=1008] Acti
May 06 12:11:20 adam-desktop systemd[823]: Starting GNOME Terminal Server...
May 06 12:11:20 adam-desktop dbus-daemon[1008]: [session uid=1000 pid=1008] Succ
May 06 12:11:20 adam-desktop systemd[823]: Started GNOME Terminal Server.
lines 1-15/15 (END)...skipping...
-- Logs begin at Tue 2018-10-02 13:27:30 CDT, end at Mon 2019-05-06 12:11:20 CDT. --
May 06 12:01:33 adam-desktop systemd-resolved[546]: Grace period over, resuming full feature set (UDP+EDNS0) for DNS server 192.168.1.1.
May 06 12:01:33 adam-desktop systemd-resolved[546]: Using degraded feature set (UDP) for DNS server 192.168.1.1.
May 06 12:10:20 adam-desktop gnome-shell[1231]: JS WARNING: [resource:///org/gnome/shell/ui/keyboard.js 546]: reference to undefined property "_rect"
May 06 12:10:20 adam-desktop gnome-shell[1231]: JS ERROR: Exception in callback for signal: position-changed: TypeError: this._rect is undefined
getCurrentRect@resource:///org/gnome/shell/ui/keyboard.js:546:22
wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
_onFocusPositionChanged@resource:///org/gnome/shell/ui/keyboard.js:611:20
wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22
_emit@resource:///org/gnome/gjs/modules/signals.js:128:27
_setCurrentWindow/this._currentWindowPositionId<@resource:///org/gnome/shell/ui/keyboard.js:528:21
May 06 12:11:20 adam-desktop dbus-daemon[1008]: [session uid=1000 pid=1008] Activating via systemd: service name='org.gnome.Terminal' unit='gnome-terminal-server.serv
May 06 12:11:20 adam-desktop systemd[823]: Starting GNOME Terminal Server...
May 06 12:11:20 adam-desktop dbus-daemon[1008]: [session uid=1000 pid=1008] Successfully activated service 'org.gnome.Terminal'
May 06 12:11:20 adam-desktop systemd[823]: Started GNOME Terminal Server.