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所使用的深度系统版本是Deepin 20.2，无线网卡是Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter。
遇到无线网卡RTL8821CE 802.11ac无法驱动的问题 请看以下技术截图，内核在升级后部分硬件驱动失效的处理：
根据以上截图的方法操作后，出现以下错误： $ dkms status anbox, 1, 5.4.70-amd64-desktop, x86_64: installed bcmwl, 6.30.223.272+bdcom, 5.10.18-amd64-desktop, x86_64: installed bcmwl, 6.30.223.272+bdcom, 5.4.70-amd64-desktop, x86_64: installed broadcom-sta, 6.30.223.271: added deepin-anything, 0.0, 5.10.18-amd64-desktop, x86_64: installed deepin-anything, 0.0, 5.4.70-amd64-desktop, x86_64: installed huawei-wmi, 1.0, 5.10.18-amd64-desktop, x86_64: installed (original_module exists) huawei-wmi, 1.0, 5.4.70-amd64-desktop, x86_64: installed (original_module exists) nvidia-current, 460.39, 5.10.18-amd64-desktop, x86_64: installed rtl8821ce, v5.5.2_34066.20200325, 5.4.70-amd64-desktop, x86_64: installed $ sudo dkms install rtl8821ce/v5.5.2_34066.20200325 Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area... 'make' -j8 KVER=5.10.18-amd64-desktop.....(bad exit status: 2) Error! Bad return status for module build on kernel: 5.10.18-amd64-desktop (x86_64) Consult /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/make.log for more information. $ cat /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/make.log DKMS make.log for rtl8821ce-v5.5.2_34066.20200325 for kernel 5.10.18-amd64-desktop (x86_64) make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/5.10.18-amd64-desktop/build M=/var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build modules make[1]: 进入目录“/usr/src/linux-headers-5.10.18-amd64-desktop” CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_cmd.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_security.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_debug.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_io.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_ioctl_query.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_ioctl_set.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_ieee80211.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_mlme.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_mlme_ext.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_mi.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_wlan_util.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_vht.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_pwrctrl.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_rf.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_chplan.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_recv.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_sta_mgt.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_ap.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/mesh/rtw_mesh.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/mesh/rtw_mesh_pathtbl.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/mesh/rtw_mesh_hwmp.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_xmit.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_p2p.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_rson.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_tdls.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_br_ext.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_iol.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_sreset.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_btcoex_wifionly.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_btcoex.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_beamforming.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_odm.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_rm.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/rtw_rm_fsm.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/core/efuse/rtw_efuse.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/os_intfs.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/pci_intf.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/pci_ops_linux.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/ioctl_linux.o CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/xmit_linux.o /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c: In function ‘isFileReadable’: /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2203:11: error: implicit declaration of function ‘get_fs’; did you mean ‘get_sa’? [-Werror=implicit-function-declaration] oldfs = get_fs(); ^~~~~~ get_sa /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2203:9: error: incompatible types when assigning to type ‘mm_segment_t’ {aka ‘struct ’} from type ‘int’ oldfs = get_fs(); ^ /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2204:3: error: implicit declaration of function ‘set_fs’; did you mean ‘sget_fc’? [-Werror=implicit-function-declaration] set_fs(KERNEL_DS); ^~~~~~ sget_fc /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2204:10: error: ‘KERNEL_DS’ undeclared (first use in this function); did you mean ‘KERNFS_NS’? set_fs(KERNEL_DS); ^~~~~~~~~ KERNFS_NS /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2204:10: note: each undeclared identifier is reported only once for each function it appears in /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c: In function ‘retriveFromFile’: /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2241:10: error: incompatible types when assigning to type ‘mm_segment_t’ {aka ‘struct ’} from type ‘int’ oldfs = get_fs(); ^ /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2242:11: error: ‘KERNEL_DS’ undeclared (first use in this function); did you mean ‘KERNFS_NS’? set_fs(KERNEL_DS); ^~~~~~~~~ KERNFS_NS /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c: In function ‘storeToFile’: /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2276:10: error: incompatible types when assigning to type ‘mm_segment_t’ {aka ‘struct ’} from type ‘int’ oldfs = get_fs(); ^ CC [M] /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/mlme_linux.o /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.c:2277:11: error: ‘KERNEL_DS’ undeclared (first use in this function); did you mean ‘KERNFS_NS’? set_fs(KERNEL_DS); ^~~~~~~~~ KERNFS_NS cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:279：/var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/osdep_service.o] 错误 1 make[2]: *** 正在等待未完成的任务.... make[1]: *** [Makefile:1801：/var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build] 错误 2 make[1]: 离开目录“/usr/src/linux-headers-5.10.18-amd64-desktop” make: *** [Makefile:2244：modules] 错误 2
解决方法一（该方案由使用同一个型号的网卡的深度网友提供） 每次在换Linux内核都需要安装驱动，采用的是https://github.com/tomaspinho/rtl8821ce，下载后在项目根目录sudo ./dkms-install.sh就行了，可参考Deepin 20.2下安装8821ce无线驱动的方法，附可能产生的问题。
解决方法二 可以考虑换过这个网卡，因为有一机器小米Ruby 15.6用的也是这块网卡，换成英特尔AX200的就无此问题了。
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