Problems with suspend

O. Sinclair o.sinclair at
Tue Aug 7 06:34:03 UTC 2007

Dotan Cohen wrote:
> On 06/08/07, Paul S <paulatgm at> wrote:
>> Dotan Cohen said the following on 08/05/2007 06:58 PM:
>>> before the machine powers down. How do I disable the KDE lock screen?
>> Right click on the power manager in the panel, and select restore.  Then
>> uncheck the box for lock screen on resume.  Also, if things seem frozen
>> after a resume, you can also try hitting Alt-SysRq-K, which is a kernel
>> system kill signal.  It kind of replaces Cntl-Alt-Backspace, when that
>> doesn't work.  On my system, it will cycle me back to the login window.
>> HTH
> Thanks. I found that with KPowersave instead of Klaptop I can disable
> the lock screen. However, this did not resolve my issue. The screen
> stays black (lit, but black) when I resume. What else can I check?
> What is the SysRq key?
> Also, although hibernation works properly, it is way to slow for my
> constantly moving workflow, thus I need suspend.
I found this at ubuntuforums and since I did these changes it has worked 
near perfect for me. I do always quit/close Kontact/Kmail though before 
I suspend/hibernate as a couple of times files have got locked up.

code follows:
getting suspend to work
root edit /etc/default/acpi-support

# Comment the next line to disable ACPI suspend to RAM

# Comment the next line to disable suspend to disk

# Change the following to "standby" to use ACPI S1 sleep, rather than S3.
# This will save less power, but may work on more machines

# Add modules to this list to have them removed before suspend and reloaded
# on resume. An example would be MODULES="em8300 yenta_socket"
# Note that network cards and USB controllers will automatically be 
# unless they're listed in MODULES_WHITELIST

# Add modules to this list to leave them in the kernel over suspend/resume

# Should we save and restore state using the VESA BIOS Extensions?

# The file that we use to save the vbestate

# Should we attempt to warm-boot the video hardware on resume?

# Save and restore video state?

# Should we switch the screen off with DPMS on suspend?

# Use Radeontool to switch the screen off? Seems to be needed on some 

# Uncomment the next line to switch away from X and back again after resume.
# This is needed for some hardware, but should be unnecessary on most.

# Set the following to "platform" if you want to use ACPI to shut down
# your machine on hibernation

# Comment this out to disable screen locking on resume

# Uncomment this line to have DMA disabled before suspend and reenabled
# afterwards

# Uncomment this line to attempt to reset the drive on resume. This seems
# to be needed for some Sonys

# Add services to this list to stop them before suspend and restart them in
# the resume process.

# Restart Infra Red services on resume - off by default as it crashes some
# machines

# Switch to laptop-mode on battery power - off by default as it causes odd
# hangs on some machines

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