先选中一个文件夹，再尝试操作

亲，您在终端执行下这条命令，然后把执行的内容发上来我们看看

sudo apt install inxi -y && inxi -F && cat /etc/apt/sources.list /etc/apt/sources.list.d/*.list |grep -v ^#

是这一块吗

System:    Host: Hua-PC Kernel: 5.15.77-amd64-desktop x86_64 bits: 64 Desktop: Deepin 20.9 Distro: Deepin 20.9 
Machine:   Type: Laptop System: Hasee product: GI5S v: N/A serial:  
           Mobo: Standard model: Standard serial:  UEFI: American Megatrends v: N.1.02 date: 09/27/2017 
Battery:   ID-1: BAT0 charge: 38.8 Wh condition: 38.8/46.7 Wh (83%) 
CPU:       Topology: Quad Core model: Intel Core i7-7700HQ bits: 64 type: MT MCP L2 cache: 6144 KiB 
           Speed: 2426 MHz min/max: 800/3800 MHz Core speeds (MHz): 1: 3609 2: 3598 3: 3525 4: 3466 5: 2664 6: 3484 7: 3519 
           8: 3527 
Graphics:  Device-1: Intel HD Graphics 630 driver: i915 v: kernel 
           Device-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile] driver: nvidia v: 510.85.02 
           Display: x11 server: X.Org 1.20.11 driver: modesetting,nvidia unloaded: fbdev,nouveau,vesa 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel HD Graphics 630 (KBL GT2) v: 4.6 Mesa 21.3.8 
Audio:     Device-1: Intel CM238 HD Audio driver: snd_hda_intel 
           Device-2: NVIDIA GP107GL High Definition Audio driver: snd_hda_intel 
           Sound Server: ALSA v: k5.15.77-amd64-desktop 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 
           IF: enp2s0f1 state: down mac: b0:25:aa:25:4c:a1 
           Device-2: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] driver: iwlwifi 
           IF: wlp3s0 state: up mac: b0:35:9f:d9:4b:17 
           IF-ID-1: br-241d85ebb581 state: down mac: 02:42:e0:5e:38:04 
           IF-ID-2: br-9699ae1c5f7a state: up speed: 10000 Mbps duplex: unknown mac: 02:42:ad:af:c0:e4 
           IF-ID-3: br-ab9b48b80681 state: up speed: 10000 Mbps duplex: unknown mac: 02:42:72:8a:00:9d 
           IF-ID-4: br-d01630af32cc state: down mac: 02:42:1c:38:e6:0a 
           IF-ID-5: br-ef356f4e7acb state: up speed: 10000 Mbps duplex: unknown mac: 02:42:05:a7:76:34 
           IF-ID-6: docker0 state: down mac: 02:42:20:6d:b0:7f 
           IF-ID-7: utun7 state: unknown speed: 10 Mbps duplex: full mac: N/A 
           IF-ID-8: veth0dcf88c state: up speed: 10000 Mbps duplex: full mac: 96:cb:74:2a:00:1f 
           IF-ID-9: veth2d05b2d state: up speed: 10000 Mbps duplex: full mac: 8a:4e:a6:5f:20:19 
           IF-ID-10: vethb05223a state: up speed: 10000 Mbps duplex: full mac: 72:d7:e7:94:60:81 
           IF-ID-11: vethdc1ae58 state: up speed: 10000 Mbps duplex: full mac: fa:0d:18:77:5d:27 
Drives:    Local Storage: total: 1.96 TiB used: 636.97 GiB (31.8%) 
           ID-1: /dev/nvme0n1 model: ZHITAI TiPro7000 1TB size: 953.87 GiB 
           ID-2: /dev/sda model: Phison SM280128GPTCB2T-S112610 size: 119.24 GiB 
           ID-3: /dev/sdb vendor: HGST (Hitachi) model: HTS541010B7E610 size: 931.51 GiB 
Partition: ID-1: / size: 100.77 GiB used: 17.06 GiB (16.9%) fs: ext4 dev: /dev/sda3 
           ID-2: /home size: 937.82 GiB used: 89.70 GiB (9.6%) fs: ext4 dev: /dev/nvme0n1p1 
           ID-3: swap-1 size: 16.00 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda2 
Sensors:   System Temperatures: cpu: 69.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 343 Uptime: 39m Memory: 15.55 GiB used: 4.81 GiB (30.9%) Shell: bash inxi: 3.0.32

是一样的

sudo chmod a+x /usr/bin/dde-file-manager-pkexec

执行这个。盲猜是这个文件丢失了执行位导致。

确实是 dde-file-manager这个缺失 但您给的这个命令我还没有运行过
不过运行 pkexec dde-file-manager 的表现是跟 这篇 的三楼是一样的