如果是Btrfs文件系统，开机选项有boot from read only snapshot。进去之后，选择最近一次的正常系统快照。进去选定的快照系统后，点开终端，输入sudo snapper rollback。然后重启。进入默认的opensuse启动项，就是你最近那次完好的系统。
我用U盘进行resume system时，看了/var/log下面的message，发现是加载内核时nvidia显卡出错，图形界面启动失败。
现在最大的问题系，无论是正常启动系统还是高级模式下的恢复模式启动系统，都会卡在login界面，键盘任何按键都没反应，想要使用字符模式都不行。
我用的是ext4
显卡问题无能为力，不过开发环境之类的一般不都在home目录下么？这样的话重装一下再把home挂载回来问题不大吧。
只有少数在home下，现在如果tty1下能响应键盘的话，其实还是很好解决的
搞个rescue U盘chroot进去修吧！操作操作显卡驱动什么的
在引导画面按 e 进入编辑模式，在引导参数最后加 “init 3”
好的，先谢谢哈，今晚回去试试
谢谢哈，今晚回去试试看
我的系统升级后，也只能登录文本模式，把原有的第三方显卡驱动卸载了，重新安装一下就可以图形登录了，我一直这样干。我不确定你的显卡是INVDIA
我的是nvidia显卡，为什么我的Login界面不能响应键盘呢，运行模式没切换过来？
还有不是说只有升级内核后闭源显卡才要重新安装嘛，我那次升级没有升级内核呀
它说找不到init命令
加在引导参数上啊
又不是运行，怎么还能找不到呢
我一开始加到最后了
不过现在加载引导参数后面，键盘还是响应不了，我在resume里面尝试了chroot，然后成功把NVIDIA驱动卸载了，接着安装，出现下面的错误：
installer version: 418.56
PATH: /sbin:/bin:/usr/sbin:/usr/bin
nvidia-installer command line:
./nvidia-installer
Unable to load: nvidia-installer ncurses v6 user interface
Unable to load: nvidia-installer ncurses user interface
Using built-in stream user interface
-> Detected 2 CPUs online; setting concurrency level to 2.
-> Installing NVIDIA driver version 418.56.
-> Running distribution scripts
executing: '/usr/lib/nvidia/pre-install'...
grep: /etc/sysconfig/kernel: No such file or directory
-> done.
-> The distribution-provided pre-install script completed successfully. If this is the first time you have run the installer, this script may have helped disable Nouveau, but a reboot may be required first. Would you like to continue, or would you prefer to abort installation to reboot the system? (Answer: Continue installation)
WARNING: The file '/proc/sys/kernel/modprobe' is unavailable; the X server will use `/sbin/modprobe` as the path to the `modprobe` utility. This path differs from the one determined by `nvidia-installer`, /usr/bin/kmod. Please verify that `/sbin/modprobe` works correctly or mount the /proc file system and verify that '/proc/sys/kernel/modprobe' reports the correct path.
WARNING: Unable to open the file '/proc/version' (No such file or directory).
-> Performing CC sanity check with CC="/usr/bin/cc".
-> Kernel source path: '/lib/modules/4.12.14-lp151.23-default/source'
-> Kernel output path: '/lib/modules/4.12.14-lp151.23-default/build'
-> Performing Compiler check.
-> Performing Dom0 check.
-> Performing Xen check.
-> Performing PREEMPT_RT check.
-> Performing vgpu_kvm check.
-> Cleaning kernel module build directory.
executing: 'cd ./kernel; /usr/bin/make -k -j2 clean NV_EXCLUDE_KERNEL_MODULES="" SYSSRC="/lib/modules/4.12.14-lp151.23-default/source" SYSOUT="/lib/modules/4.12.14-lp151.23-default/build"'...
rm -f -r conftest
make[1]: Entering directory '/usr/src/linux-4.12.14-lp151.23'
make[2]: Entering directory '/usr/src/linux-4.12.14-lp151.23-obj/x86_64/default'
make[2]: Leaving directory '/usr/src/linux-4.12.14-lp151.23-obj/x86_64/default'
make[1]: Leaving directory '/usr/src/linux-4.12.14-lp151.23'
-> Building kernel modules
executing: 'cd ./kernel; /usr/bin/make -k -j2 NV_EXCLUDE_KERNEL_MODULES="" SYSSRC="/lib/modules/4.12.14-lp151.23-default/source" SYSOUT="/lib/modules/4.12.14-lp151.23-default/build"'...
make[1]: Entering directory '/usr/src/linux-4.12.14-lp151.23'
make[2]: Entering directory '/usr/src/linux-4.12.14-lp151.23-obj/x86_64/default'
SYMLINK /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-kernel.o
SYMLINK /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia-modeset/nv-modeset-kernel.o
CONFTEST: INIT_WORK
CONFTEST: remap_pfn_range
CONFTEST: hash__remap_4k_pfn
CONFTEST: follow_pfn
CONFTEST: vmap
CONFTEST: set_pages_uc
CONFTEST: list_is_first
CONFTEST: set_memory_uc
CONFTEST: set_memory_array_uc
CONFTEST: change_page_attr
CONFTEST: pci_get_class
CONFTEST: pci_choose_state
CONFTEST: vm_insert_page
CONFTEST: acpi_device_id
CONFTEST: acquire_console_sem
CONFTEST: console_lock
CONFTEST: kmem_cache_create
CONFTEST: on_each_cpu
CONFTEST: smp_call_function
CONFTEST: acpi_evaluate_integer
CONFTEST: ioremap_cache
CONFTEST: ioremap_wc
CONFTEST: acpi_walk_namespace
CONFTEST: pci_domain_nr
CONFTEST: pci_dma_mapping_error
CONFTEST: sg_alloc_table
CONFTEST: sg_init_table
CONFTEST: pci_get_domain_bus_and_slot
CONFTEST: get_num_physpages
CONFTEST: proc_create_data
CONFTEST: efi_enabled
CONFTEST: pde_data
CONFTEST: proc_remove
CONFTEST: pm_vt_switch_required
CONFTEST: xen_ioemu_inject_msi
CONFTEST: phys_to_dma
CONFTEST: get_dma_ops
CONFTEST: write_cr4
CONFTEST: of_get_property
CONFTEST: of_find_node_by_phandle
CONFTEST: of_node_to_nid
CONFTEST: pnv_pci_get_npu_dev
CONFTEST: of_get_ibm_chip_id
CONFTEST: for_each_online_node
CONFTEST: node_end_pfn
CONFTEST: pci_bus_address
CONFTEST: pci_stop_and_remove_bus_device
CONFTEST: pci_remove_bus_device
CONFTEST: request_threaded_irq
CONFTEST: register_cpu_notifier
CONFTEST: cpuhp_setup_state
CONFTEST: dma_map_resource
CONFTEST: backlight_device_register
CONFTEST: register_acpi_notifier
CONFTEST: timer_setup
CONFTEST: pci_enable_msix_range
CONFTEST: compound_order
CONFTEST: do_gettimeofday
CONFTEST: remap_page_range
CONFTEST: address_space_init_once
CONFTEST: kbasename
CONFTEST: fatal_signal_pending
CONFTEST: list_cut_position
CONFTEST: vzalloc
CONFTEST: wait_on_bit_lock_argument_count
CONFTEST: bitmap_clear
CONFTEST: usleep_range
CONFTEST: radix_tree_empty
CONFTEST: radix_tree_replace_slot
CONFTEST: pnv_npu2_init_context
CONFTEST: drm_dev_unref
CONFTEST: drm_reinit_primary_mode_group
CONFTEST: get_user_pages_remote
CONFTEST: get_user_pages
CONFTEST: drm_gem_object_lookup
CONFTEST: drm_atomic_state_ref_counting
CONFTEST: drm_driver_has_gem_prime_res_obj
CONFTEST: drm_atomic_helper_connector_dpms
CONFTEST: drm_connector_funcs_have_mode_in_name
CONFTEST: vmf_insert_pfn
CONFTEST: drm_framebuffer_get
CONFTEST: drm_gem_object_get
CONFTEST: is_export_symbol_gpl_of_node_to_nid
CONFTEST: drm_dev_put
CONFTEST: is_export_symbol_present_swiotlb_map_sg_attrs
CONFTEST: is_export_symbol_present_swiotlb_dma_ops
CONFTEST: i2c_adapter
CONFTEST: pm_message_t
CONFTEST: irq_handler_t
CONFTEST: acpi_device_ops
CONFTEST: acpi_op_remove
CONFTEST: outer_flush_all
CONFTEST: proc_dir_entry
CONFTEST: scatterlist
CONFTEST: sg_table
CONFTEST: file_operations
CONFTEST: vm_operations_struct
CONFTEST: atomic_long_type
CONFTEST: pci_save_state
CONFTEST: file_inode
CONFTEST: task_struct
CONFTEST: kuid_t
CONFTEST: dma_ops
CONFTEST: swiotlb_dma_ops
CONFTEST: dma_map_ops
CONFTEST: noncoherent_swiotlb_dma_ops
CONFTEST: vm_fault_present
CONFTEST: vm_fault_has_address
CONFTEST: backlight_properties_type
CONFTEST: vmbus_channel_has_ringbuffer_page
CONFTEST: fault_flags
CONFTEST: atomic64_type
CONFTEST: address_space
CONFTEST: backing_dev_info
CONFTEST: mm_context_t
CONFTEST: vm_ops_fault_removed_vma_arg
CONFTEST: node_states_n_memory
CONFTEST: drm_bus_present
CONFTEST: drm_bus_has_bus_type
CONFTEST: drm_bus_has_get_irq
CONFTEST: drm_bus_has_get_name
CONFTEST: drm_driver_has_legacy_dev_list
CONFTEST: drm_driver_has_set_busid
CONFTEST: drm_crtc_state_has_connectors_changed
CONFTEST: drm_init_function_args
CONFTEST: drm_mode_connector_list_update_has_merge_type_bits_arg
CONFTEST: drm_helper_mode_fill_fb_struct
CONFTEST: drm_master_drop_has_from_release_arg
CONFTEST: drm_driver_unload_has_int_return_type
CONFTEST: kref_has_refcount_of_type_refcount_t
CONFTEST: drm_atomic_helper_crtc_destroy_state_has_crtc_arg
CONFTEST: drm_crtc_helper_funcs_has_atomic_enable
CONFTEST: drm_mode_object_find_has_file_priv_arg
CONFTEST: dma_buf_owner
CONFTEST: drm_connector_list_iter
CONFTEST: drm_atomic_helper_swap_state_has_stall_arg
CONFTEST: dom0_kernel_present
CONFTEST: nvidia_vgpu_hyperv_available
CONFTEST: nvidia_vgpu_kvm_build
CONFTEST: nvidia_grid_build
CONFTEST: drm_available
CONFTEST: drm_atomic_available
CONFTEST: is_export_symbol_gpl_refcount_inc
CONFTEST: is_export_symbol_gpl_refcount_dec_and_test
CC [M] /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-frontend.o
CC [M] /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-instance.o
In file included from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/conftest.h:6:0,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/nv-linux.h:17,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-frontend.c:13:
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:14: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘.’ token
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:30: error: stray ‘\342’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:31: error: stray ‘\200’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:32: error: stray ‘\230’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:75: error: stray ‘\342’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:76: error: stray ‘\200’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:15:77: error: stray ‘\231’ in program
conftest13386.c: In function ‘conftest_drm_atomic_set_mode_prop_for_crtc’:
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:61: error: stray ‘\342’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:62: error: stray ‘\200’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:63: error: stray ‘\230’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:97: error: stray ‘\342’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:98: error: stray ‘\200’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:16:99: error: stray ‘\231’ in program
conftest13386.c:21:21: error: too few arguments to function ‘drm_atomic_set_mode_prop_for_crtc’
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:18:22: error: expected identifier or ‘(’ before ‘^’ token
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^
/tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/conftest/generic.h:20:14: error: too many decimal points in number
/lib/modules/4.12.14-lp151.23-default/source/include/drm/drm_atomic.h:604:1: note: declared here
^~~~~~~
In file included from /usr/src/linux-4.12.14-lp151.23/include/linux/linkage.h:4:0,
from /usr/src/linux-4.12.14-lp151.23/include/linux/preempt.h:9,
from /usr/src/linux-4.12.14-lp151.23/include/linux/spinlock.h:50,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/nv-lock.h:16,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/nv-linux.h:19,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-frontend.c:13:
/usr/src/linux-4.12.14-lp151.23/include/linux/compiler.h:109:28: error: field ‘data’ has incomplete type
struct ftrace_branch_data data;
^~~~
In file included from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/conftest.h:6:0,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/common/inc/nv-linux.h:17,
from /tmp/selfgz10315/NVIDIA-Linux-x86_64-418.56/kernel/nvidia/nv-instance.c:13:
不知道我使用U盘upgrade行不行呢？
我升级之后也卡在登录界面了！键盘鼠标无响应！我的电脑是intel集成显卡，登录界面有点发虚，分辨率不高。难道intel显卡驱动也不行？不应该啊！
即使自动登录进去，键盘鼠标还是无响应，网络还打叉，我是插着网线的。
你这个是nvidia显卡驱动内核模块没法编译，和你的内核版本不匹配。
尝试一下这个库里面的nvidia驱动安装包吧：
http://download.nvidia.com/opensuse/leap/15.1/x86_64/
如果你是新显卡（GTX8XX以上），安装
nvidia-computeG05-418.56-lp151.9.1.x86_64.rpm， nvidia-gfxG05-kmp-default-418.56_k4.12.14_lp151.24-lp151.9.12.x86_64.rpm， nvidia-glG05-418.56-lp151.9.1.x86_64.rpm， x11-video-nvidiaG05-418.56-lp151.9.1.x86_64.rpm这四个包。
好的，蟹蟹您，我忙完尝试一下