Ubuntu
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  1. Bug #1007765
  2. Comment #102

Comment 102 for bug 1007765

Revision history for this message
Aditya (aditya8892) wrote : Re: [Bug 1007765] Re: brightness adjusting crashes system

Hi,

> On Fri, Aug 23, 2013 at 04:09:46PM -0000, Aditya wrote:
>> Hi,
>> by different I mean that the system freezes in both the situations, with nmi_watchdog enabled and disabled, and this happens as soon as I soon as I change the brightness levels, and this is the reason I actually reached this bug report.
> Then, let's do some testing.
>
> Could you please do the following:
>
> - Boot the system with acpi_backlight=vendor
>
> - sudo echo 0 >/proc/sys/kernel/nmi_watchdog
>
> - cat /proc/sys/kernel/nmi_watchdog (make sure the output is 0)
I did this, as a result, the system is responsive for 10 - 15 seconds
after brightness change.
I am able to change brightness multiple times within this window. After
this the system freezes.