有时当我登录 Kubuntu 14.10 时，我的第一个桌面很好，但当我切换到其他桌面时，我的所有小工具都消失了，它具有 Ubuntu 默认背景，当我返回到我登录时看到的第一个桌面时，它也丢失了所有小工具，并且也具有 Ubuntu 默认背景。我通过登录并退出来解决这个问题，但这仍然有点烦人。
此外，当我切换到其中一个桌面时，我无法再使用鼠标滚轮来更改虚拟桌面。以防万一，这可能会提供更多关于问题的信息。
这是我的输出lspci -v：
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
Subsystem: Dell Device 05d7
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: hsw_uncore
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: f6000000-f70fffff
Prefetchable memory behind bridge: 00000000e0000000-00000000f1ffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:02.0 Display controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
Subsystem: Dell Device 05d7
Flags: bus master, fast devsel, latency 0, IRQ 48
Memory at f7400000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Capabilities: <access denied>
Kernel driver in use: i915
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
Subsystem: Intel Corporation Device 2010
Flags: bus master, fast devsel, latency 0, IRQ 50
Memory at f7a14000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04) (prog-if 30 [XHCI])
Subsystem: Dell Device 05d7
Flags: bus master, medium devsel, latency 0, IRQ 45
Memory at f7a00000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Dell Device 05d7
Flags: bus master, fast devsel, latency 0, IRQ 49
Memory at f7a1e000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: mei_me
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04) (prog-if 20 [EHCI])
Subsystem: Dell Device 05d7
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at f7a1c000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
Subsystem: Dell Device 05d7
Flags: bus master, fast devsel, latency 0, IRQ 51
Memory at f7a10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: f7900000-f79fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: f7800000-f78fffff
Prefetchable memory behind bridge: 00000000f2100000-00000000f21fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04) (prog-if 20 [EHCI])
Subsystem: Dell Device 05d7
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at f7a1b000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation H87 Express LPC Controller (rev 04)
Subsystem: Dell Device 05d7
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich
00:1f.2 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 04)
Subsystem: Dell Device 05d7
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 46
I/O ports at f0b0 [size=8]
I/O ports at f0a0 [size=4]
I/O ports at f090 [size=8]
I/O ports at f080 [size=4]
I/O ports at f060 [size=32]
Memory at f7a1a000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
Subsystem: Dell Device 05d7
Flags: medium devsel, IRQ 11
Memory at f7a19000 (64-bit, non-prefetchable) [size=256]
I/O ports at f040 [size=32]
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 745] (rev a2) (prog-if 00 [VGA controller])
Subsystem: NVIDIA Corporation Device 1065
Flags: bus master, fast devsel, latency 0, IRQ 52
Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f0000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [size=128]
[virtual] Expansion ROM at f7000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia
01:00.1 Audio device: NVIDIA Corporation Device 0fbc (rev a1)
Subsystem: NVIDIA Corporation Device 1065
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f7080000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
Subsystem: Dell Device 0208
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f7900000 (64-bit, non-prefetchable) [size=512K]
Expansion ROM at f7980000 [disabled] [size=64K]
Capabilities: <access denied>
Kernel driver in use: ath9k
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
Subsystem: Dell Device 05d7
Flags: bus master, fast devsel, latency 0, IRQ 47
I/O ports at d000 [size=256]
Memory at f7800000 (64-bit, non-prefetchable) [size=4K]
Memory at f2100000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169