projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | From kernel/suspend.c: |
| 2 | ||
| 3 | * BIG FAT WARNING ********************************************************* | |
| 4 | * | |
| 5 | * If you have unsupported (*) devices using DMA... | |
| 6 | * ...say goodbye to your data. | |
| 7 | * | |
| 8 | * If you touch anything on disk between suspend and resume... | |
| 9 | * ...kiss your data goodbye. | |
| 10 | * | |
| 11 | * If your disk driver does not support suspend... (IDE does) | |
| 12 | * ...you'd better find out how to get along | |
| 13 | * without your data. | |
| 14 | * | |
| 15 | * If you change kernel command line between suspend and resume... | |
| 16 | * ...prepare for nasty fsck or worse. | |
| 17 | * | |
| 18 | * If you change your hardware while system is suspended... | |
| 19 | * ...well, it was not good idea. | |
| 20 | * | |
| 21 | * (*) suspend/resume support is needed to make it safe. | |
| 22 | ||
| 23 | You need to append resume=/dev/your_swap_partition to kernel command | |
| 24 | line. Then you suspend by | |
| 25 | ||
| 26 | echo shutdown > /sys/power/disk; echo disk > /sys/power/state | |
| 27 | ||
| 28 | . If you feel ACPI works pretty well on your system, you might try | |
| 29 | ||
| 30 | echo platform > /sys/power/disk; echo disk > /sys/power/state | |
| 31 | ||
| 32 | ||
| 33 | ||
| 34 | Article about goals and implementation of Software Suspend for Linux | |
| 35 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| 36 |