ubuntu 18 更新后卡在紫屏

ubuntu 18 更新后卡在紫屏

几天前,我运行了一个简单的更新,然后我的电脑崩溃了。当我启动它时,几秒钟后,我只看到一个紫色屏幕,什么也没发生。

  1. 我无法通过按住shiftnor进入恢复模式esc
  2. 我无法从 Live CD 挂载安装 Ubuntu 18.04 的分区(请参阅下文)

从 Live CD 我运行

ubuntu@ubuntu:/$ blkid
 /dev/loop0: TYPE="squashfs" 
 /dev/sda1: UUID="ABDB-0A93" TYPE="vfat" 
 /dev/sda2: UUID="o9H0is-5d5M-h42G-FwCG-QbpK-brc8-0y511X" TYPE="LVM2_member" 
 /dev/sr0: LABEL="Ubuntu 14.04.1 LTS amd64" TYPE="iso9660" 
 /dev/mapper/ubuntu--vg-root: UUID="17164613-461c-494b-9c12-b6f82a487ed9" TYPE="ext4" 
 /dev/mapper/ubuntu--vg-swap_1: UUID="a124fd2f-318c-487e-9b7e-b576037f3b9f" TYPE="swap" 

(由于fdisk在 GUID 分区表上不能正常工作,所以它没有列出sda2分区)。

我可以在 Nautilus 中看到该分区,但如果我单击它,就会出现以下消息:

mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail  or so

所以我尝试

dmesg | tail
[ 7588.001413] ath: regdomain 0x817c dynamically updated by country IE
[ 7588.001435] cfg80211: Regulatory domain changed to country: IT
[ 7588.001436] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 7588.001438] cfg80211:   (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 7588.001440] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 7588.001441] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 7588.001443] cfg80211:   (5490000 KHz - 5710000 KHz @ 40000 KHz), (N/A, 2700 mBm)
[ 7588.001445] cfg80211:   (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm)
[ 7880.935634] JBD2: Unrecognised features on journal
[ 7880.935657] EXT4-fs (dm-0): error loading journal

但是,如果我尝试sda2通过 shell 安装,我会得到

sudo mount /dev/sda2 /mnt/part
mount: unknown filesystem type 'LVM2_member'

由于我无法挂载 sda2,因此无法更新 grub 或查看使用的内核。我该怎么做?

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