patch-1.3.85 linux/Documentation/Configure.help
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- Lines: 127
- Date:
Mon Apr 8 11:46:08 1996
- Orig file:
v1.3.84/linux/Documentation/Configure.help
- Orig date:
Wed Apr 3 16:06:54 1996
diff -u --recursive --new-file v1.3.84/linux/Documentation/Configure.help linux/Documentation/Configure.help
@@ -1236,16 +1236,14 @@
Future Domain 16xx SCSI support
CONFIG_SCSI_FUTURE_DOMAIN
This is support for Future Domain's 16-bit SCSI host adaptors
- (TMC-1660/1680, TMC-1650/1670, TMC-3260) and other adaptors based on
- the Future Domain chipsets (Quantum ISA-200S, ISA-250MG; and at
- least one IBM board). It is explained in section 3.7 of the
- SCSI-HOWTO, available via ftp (user: anonymous) at
- sunsite.unc.edu:/pub/Linux/docs/HOWTO. If it doesn't work out of
- the box, you may have to change some settings in
- drivers/scsi/fdomain.h. This driver is also available as a module (
- = code which can be inserted in and removed from the running kernel
- whenever you want). If you want to compile it as a module, say M
- here and read Documentation/modules.txt.
+ (TMC-1660/1680, TMC-1650/1670, TMC-3260, TMC-1610M/MER/MEX) and other
+ adaptors based on the Future Domain chipsets (Quantum ISA-200S,
+ ISA-250MG; Adaptec AHA-2920; and at least one IBM board). It is
+ explained in section 3.7 of the SCSI-HOWTO, available via ftp (user:
+ anonymous) at sunsite.unc.edu:/pub/Linux/docs/HOWTO. This driver is
+ also available as a module ( = code which can be inserted in and
+ removed from the running kernel whenever you want). If you want to
+ compile it as a module, say M here and read Documentation/modules.txt.
Generic NCR5380/53c400 SCSI support
CONFIG_SCSI_GENERIC_NCR5380
@@ -2878,14 +2876,21 @@
Advanced Power Management
CONFIG_APM
- APM is a BIOS standard for saving power using several different
- techniques. This is mostly useful for battery powered laptops with
- APM compliant BIOSes. Specifically, the time will be reset after a
- USER RESUME operation, the /proc/apm device will provide battery
- status information, and ioctls are provided to put the machine in
- STANDBY or SUSPEND mode. This driver does not work for the TI 4000M
- TravelMate and the ACER 486/DX4/75 because they don't follow the
- standard. Say Y if you have a different laptop.
+ APM is a BIOS specification for saving power using several different
+ techniques. This is mostly useful for battery powered laptops with APM
+ compliant BIOSes. Specifically, the time will be reset after a USER
+ RESUME operation, the /proc/apm device will provide battery status
+ information, and user-space programs will receive notification of APM
+ "events" (e.g., battery status change). This driver does not spin down
+ disk drives (see hdparm(8) for that); and it doesn't turn off
+ VESA-compliant "green" monitors. This driver does not support the TI
+ 4000M TravelMate and the ACER 486/DX4/75 because they don't have
+ compliant BIOSes. Many "green" desktop machines also don't have
+ compliant BIOSes, and this driver will cause those machines to panic
+ during the boot phase (typically, these machines are using a data
+ segment of 0040, which is reserved for the Linux kernel). If you don't
+ have a battery in your machine, there isn't much point in using this
+ driver.
Ignore USER SUSPEND
CONFIG_APM_IGNORE_USER_SUSPEND
@@ -2897,16 +2902,37 @@
CONFIG_APM_DO_ENABLE
Enable APM features at boot time. From page 36 of the APM BIOS
specification: "When disabled, the APM BIOS does not automatically
- power manage devices, enter the Standby State, enter the Suspend
- State, or take power saving steps in response to CPU Idle calls."
- This driver will make CPU Idle calls when Linux is idle (unless this
- feature is turned off -- see below). This should always save
- battery power, but more complicated APM features will be dependent
- on your BIOS implementation. You may need to turn this option off
- if your computer hangs at boot time when using APM support, or if it
- beeps continuously instead of suspending. Turn this off if you have
- a NEC UltraLite Versa 33/C or a Toshiba T400CDT. This is off by
- default since most machines do fine without this feature.
+ power manage devices, enter the Standby State, enter the Suspend State,
+ or take power saving steps in response to CPU Idle calls." This driver
+ will make CPU Idle calls when Linux is idle (unless this feature is
+ turned off -- see below). This should always save battery power, but
+ more complicated APM features will be dependent on your BIOS
+ implementation. You may need to turn this option off if your computer
+ hangs at boot time when using APM support, or if it beeps continuously
+ instead of suspending. Turn this off if you have a NEC UltraLite Versa
+ 33/C or a Toshiba T400CDT. This is off by default since most machines
+ do fine without this feature.
+
+Do CPU IDLE calls
+CONFIG_APM_CPU_IDLE
+ Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
+ On some machines, this can activate improved power savings, such as a
+ slowed CPU clock rate, when the machine is idle. These idle calls are
+ made after the idle loop has run for some length of time (e.g., 333
+ mS). On some machines, this will cause a hang at boot time or whenever
+ the CPU becomes idle. (On machines with more than one CPU, this option
+ does nothing.)
+
+Black display
+CONFIG_APM_DISPLAY_BLANK
+ Enable console blanking using the APM. Some laptops can use this to
+ turn off the LCD backlight when the VC screen blanker blanks the
+ screen. Note that this is only used by the VC screen blanker, and
+ won't turn off the backlight when using X11 (this also doesn't have
+ anything to do with your VESA-compliant power-saving monitor).
+ Further, this option doesn't work for all laptops -- it might not turn
+ off your backlight at all, or it might print a lot of errors to the
+ console.
Watchdog Timer Support
CONFIG_WATCHDOG
@@ -2959,23 +2985,6 @@
A software monitoring watchdog. This will fail to reboot your system
from some situations that the hardware watchdog will recover
from. Equally it's a lot cheaper to install.
-
-Do CPU IDLE calls
-CONFIG_APM_CPU_IDLE
- Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
- On some machines, this can activate improved power savings, such as
- a slowed CPU clock rate, when the machine is idle. These idle call
- is made after the idle loop has run for some length of time (e.g.,
- 333 mS). On some machines, this will cause a hang at boot time or
- whenever the CPU becomes idle. (On machines with more than one CPU,
- this option does nothing.)
-
-Black display
-CONFIG_APM_DISPLAY_BLANK
- Enable console blanking using the APM. Some laptops can use this to
- turn off the LCD backlight when the VC screen blanker blanks the
- screen. Note that this is only used by the VC screen blanker, and
- won't turn off the backlight when using X11.
Sound card support
CONFIG_SOUND
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov
with Sam's (original) version of this