diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 10 | ||||
| -rw-r--r-- | Documentation/power/basic-pm-debugging.txt | 4 |
2 files changed, 12 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 98cf90f2631..189df0bcab9 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -479,6 +479,16 @@ and is between 256 and 4096 characters. It is defined in the file UART at the specified I/O port or MMIO address. The options are the same as for ttyS, above. + no_console_suspend + [HW] Never suspend the console + Disable suspending of consoles during suspend and + hibernate operations. Once disabled, debugging + messages can reach various consoles while the rest + of the system is being put to sleep (ie, while + debugging driver suspend/resume hooks). This may + not work reliably with all consoles, but is known + to work with serial and VGA consoles. + cpcihp_generic= [HW,PCI] Generic port I/O CompactPCI driver Format: <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] diff --git a/Documentation/power/basic-pm-debugging.txt b/Documentation/power/basic-pm-debugging.txt index 1a85e2b964d..57aef2f6e0d 100644 --- a/Documentation/power/basic-pm-debugging.txt +++ b/Documentation/power/basic-pm-debugging.txt @@ -78,8 +78,8 @@ c) Advanced debugging In case the STD does not work on your system even in the minimal configuration and compiling more drivers as modules is not practical or some modules cannot be unloaded, you can use one of the more advanced debugging techniques to find -the problem. First, if there is a serial port in your box, you can set the -CONFIG_DISABLE_CONSOLE_SUSPEND kernel configuration option and try to log kernel +the problem. First, if there is a serial port in your box, you can boot the +kernel with the 'no_console_suspend' parameter and try to log kernel messages using the serial console. This may provide you with some information about the reasons of the suspend (resume) failure. Alternatively, it may be possible to use a FireWire port for debugging with firescope |