我有一个 1GB 的交换分区（RAM 1GB，Ubuntu 12.04 lts）。现在交换分区不显示在系统监视器上，我也无法使我的电脑休眠（sudo pm-hibernate）。
blkid 输出：
/dev/sda1: UUID="B8B4FBB1B4FB706C" TYPE="ntfs"
/dev/sda2: UUID="2ea7d608-2d89-4e41-9436-d05cb3ce8871" TYPE="swap"
/dev/sda3: UUID="3219d03a-67e4-454b-8ce7-a27831846e35" TYPE="ext4"
/dev/sda5: LABEL="Softwares" UUID="AC1CC3301CC2F47C" TYPE="ntfs"
/dev/sda6: LABEL="Education" UUID="1E103E6C103E4B53" TYPE="ntfs"
/dev/sda7: LABEL="Recreation" UUID="2CC8D181C8D149AA" TYPE="ntfs"
/dev/sda8: LABEL="Miscellaneous" UUID="0274D6B174D6A727" TYPE="ntfs"
/etc/fstab
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda6 during installation
UUID=3219d03a-67e4-454b-8ce7-a27831846e35 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda5 during installation
UUID=2ea7d608-2d89-4e41-9436-d05cb3ce8871 none swap sw 0 0
免费-m
total used free shared buffers cached
Mem: 991 867 123 0 27 418
-/+ buffers/cache: 421 569
Swap: 0 0 0
猫/ proc / swaps
Filename Type Size Used Priority
fdisk -l
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x9f369f36
Device Boot Start End Blocks Id System
/dev/sda1 * 63 31471334 15735636 7 HPFS/NTFS/exFAT
/dev/sda2 31471616 33470447 999416 82 Linux swap / Solaris
/dev/sda3 33472512 62539775 14533632 83 Linux
/dev/sda4 62541045 312592769 125025862+ f W95 Ext'd (LBA)
/dev/sda5 62541108 125066024 31262458+ 7 HPFS/NTFS/exFAT
/dev/sda6 125066088 187591004 31262458+ 7 HPFS/NTFS/exFAT
/dev/sda7 187591068 250115984 31262458+ 7 HPFS/NTFS/exFAT
/dev/sda8 250116048 312576704 31230328+ 7 HPFS/NTFS/exFAT
swapon --all
swapon: /dev/sda2: swapon failed: Invalid argument
dmesg | grep -A 5 -B 5 -i 交换
[ 9.487404] EXT4-fs (sda3): ext4_orphan_cleanup: deleting unreferenced inode 131645
[ 9.487413] EXT4-fs (sda3): ext4_orphan_cleanup: deleting unreferenced inode 131330
[ 9.487418] EXT4-fs (sda3): 16 orphan inodes deleted
[ 9.487420] EXT4-fs (sda3): recovery complete
[ 9.578600] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
[ 20.580539] Swap area shorter than signature indicates
[ 20.588363] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 20.619443] udevd[330]: starting version 175
[ 20.649959] lp: driver loaded but no devices found
[ 20.662972] [drm] Initialized drm 1.1.0 20060810
[ 20.675515] i915 0000:00:02.0: setting latency timer to 64
--
[ 72.288573] PM: thaw of drv:sr dev:3:0:0:0 complete after 178.143 msecs
[ 72.288578] PM: thaw of drv:scsi_device dev:3:0:0:0 complete after 178.136 msecs
[ 72.299677] PM: thaw of drv:scsi_device dev:2:0:0:0 complete after 189.270 msecs
[ 72.309473] PM: thaw of devices complete after 202.763 msecs
[ 72.309668] PM: writing image.
[ 72.309670] PM: Cannot find swap device, try swapon -a.
[ 72.309699] PM: Cannot get swap writer
[ 72.329896] Restarting tasks ... done.
[ 72.331777] PM: Basic memory bitmaps freed
[ 72.331792] video LNXVIDEO:00: Restoring backlight state
[ 72.420048] option1 ttyUSB0: option_instat_callback: error -84
[ 72.804047] option1 ttyUSB0: option_instat_callback: error -84
--
[ 145.960625] sd 7:0:0:0: Attached scsi generic sg2 type 0
[ 145.972036] sd 7:0:0:0: [sdb] Attached SCSI removable disk
[ 172.430508] PPP BSD Compression module registered
[ 172.455583] PPP Deflate Compression module registered
[ 332.260789] type=1400 audit(1381814763.342:27): apparmor="DENIED" operation="capable" parent=1 profile="/usr/sbin/cupsd" pid=636 comm="cupsd" pid=636 comm="cupsd" capability=36 capname="block_suspend"
[ 1913.030998] Swap area shorter than signature indicates
[ 2022.530155] type=1400 audit(1381816453.610:28): apparmor="DENIED" operation="capable" parent=1 profile="/usr/sbin/cupsd" pid=636 comm="cupsd" pid=636 comm="cupsd" capability=36 capname="block_suspend"
[ 4062.729509] Swap area shorter than signature indicates
请帮忙。提前致谢。
DF-H
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 14G 6.1G 7.0G 47% /
udev 488M 4.0K 488M 1% /dev
tmpfs 199M 868K 198M 1% /run
none 5.0M 4.0K 5.0M 1% /run/lock
none 496M 224K 496M 1% /run/shm
答案1
在 Swap 上使用命令 swapon -a
要查看交换状态，请使用命令 swap -s
此命令将在所有交换分区上
swapon -a
此命令将显示交换状态
swapon -s
以下是 Swap 运行时的输出
Filename Type Size Used Priority
/dev/sda5 partition 3998716 0 -1
它正在运行，然后去系统监视器看看，你的命令是错误的