Ubuntu

Syslog and Kernlog receiving large number of "drm:radeon_crtc_page_flip" and "drm:drm_mode_addfb" events per second

Asked by ddiszero

Currently there are huge amounts of logs being written into the syslog and kern.log files. the two events that are causing this are
[drm:drm_mode_addfb], [FB:46] followed by
[drm:radeon_crtc_page_flip], flip-ioctl() cur_fbo = ffff8807fe3b2000, cur_bbo = ffff880800b2dc00.

This has been reported as a bug on previous occasions although I have yet to find a proper resolution or cause of this behaviour. The problem seems to disappear before any real resolution is achieved.
Can anyone please provide guidance as to how I may be able to resolve this problem or assist in identifying the cause?

I'm currently running Ubuntu 14.04.3 LTS (Ubuntu 3.13.0-62.102-generic 3.13.11-ckt24)

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ddiszero (ddiszero) said : 		#1

just updated to Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25 and the continual logging has stopped.

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Uku Lagle (ruuter) said : 		#2

I'm still having exact same issue with 14.04.3 LTS 3.13.0-63-generic #103-Ubuntu SMP Fri Aug 14 21:42:59 UTC 2015
Syslog and kernlog gets written aprox 36 rows per second.

This happened today after complete crash, killed by REISUB and restarting system.
Did additional restart, but syslog still gets written same 2 lines many times per second.

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Uku Lagle (ruuter) said : 		#3

I was also able to get rid of the logging by installing AMD proprietary driver.

Unfortunately it took me hours, since there is so many wrong ways to do this including all the instructions on ATI homepage.
Had to drop to root shell multiple times since Ubuntu was not able to boot anymore and had to completely remove all ATI drivers again. Eventually, being back where I started, still having continual logging, I tried once more, the most easiest solution:

$ sudo apt-get install fglrx-updates

This finally worked like a charm and also stopped continual logging to syslog.