Re: How do I suppress dpms mode setting messages on text console?
On 05/03/12 05:08, Tom H wrote:
> On Sun, Mar 4, 2012 at 12:16 PM, Stephen Powell <zlinuxman@wowway.com> wrote:
>>
>> I am using Debian wheezy i386 with an Nvidia video card and the default
>> nouveau driver. �Everytime I switch back and forth between the X console
>> (tty7) and a text console (such as tty1), tty1 gets spammed with messages
>> like this:
>>
>> [drm] nouveau 0000:01:00.0: Setting dpms mode 3 on vga encoder (output 0)
>> [drm] nouveau 0000:01:00.0: Setting dpms mode 0 on vga encoder (output 0)
>> [drm] nouveau 0000:01:00.0: Output VGA-1 is running on CRTC 0 using output A
>>
>> I assume that mode 3 is graphics mode (X server) and mode 0 is text mode
>> (frame buffer simulated text console).
>>
>> Similar messages occur if I stay in a text console long enough for the
>> power management feature to turn off the display and then I re-activate the
>> display again (such as by pressing the Shift key by itself). �Apparently,
>> when power management kicks in, I get dmps mode 1; and when I re-activate
>> the console it switches back to dpms mode 0. �I do not get these results
>> on another computer which uses the Nvidia proprietary driver (nvidia),
>> nor did I get such results using this computer back when I used
>> the older free nvidia driver (nv), which has since been dropped from the
>> distribution.
>>
>> I consider these messages to be noise messages and I wish to suppress them.
>> I don't mind if they are written to the kernel log, but I don't ever want to
>> see them written to the console itself (except maybe during boot).
>>
>> I tried searching the internet, but I didn't find anything useful. �Is there
>> a way to suppress these messages without suppressing true error messages?
>> Maybe there's a module option that I can set in /etc/modprobe.d/local.conf,
>> or something along those lines? �Any help will be appreciated.
>
> Isn't this a "/proc/sys/kernel/printk" issue?
>
> You can set "kernel.printk = 3 4 1 3" in "/etc/sysctl.conf".
Yes - *that* should work (I haven't tested as I don't run the open
driver - but I've used it to suppress other annoying messages)
Won't apply until reboot though. For immediate effect:-
echo "3 4 1 3" > /proc/sys/kernel/printk
>> Where can I find documentation on this?
/usr/src/linux-source-2.6.32/Documentation/sysctl/kernel.txt
(adjust to suit your kernel)
Kind regards
--
"Oh sorry, I was taking life seriously."
— Bill Hicks
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