Bug 102184 - Logs flooded with [drm:drm_mode_addfb2 [drm]] messages
Summary: Logs flooded with [drm:drm_mode_addfb2 [drm]] messages
Status: RESOLVED INVALID
Alias: None
Product: DRI
Classification: Unclassified
Component: libdrm (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium critical
Assignee: Default DRI bug account
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Reported: 2017-08-12 12:07 UTC by Meik Neubauer
Modified: 2017-08-14 03:28 UTC (History)
0 users

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Description Meik Neubauer 2017-08-12 12:07:20 UTC 
Ubuntu 16.04HWE kernel 4.10.0-30
libdrm2 version 2.4.76-1~ubuntu16.04.1
lspci excerpt:
00:02.0 VGA compatible controller: Intel Corporation Device 193d (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Amethyst XT [Radeon R9 M295X]



kern.log, syslog and dmesg are flooded with messages like:

[213775.374922] [drm:drm_mode_addfb2 [drm]] [FB:78]
[213775.393105] [drm:drm_mode_addfb2 [drm]] [FB:76]

(always alternating between FB:78 and FB:76)

About 60 such messages per second are issued.
This causes above named log files to grow into Gigabyte range, make them unusable and cause critical disk shortages on the root filesystem.

Please provide a fix or method to stop these messages.
Comment 1 Michel Dänzer 2017-08-14 03:28:49 UTC 
This happens because you set drm.debug=0xe on the kernel command line. Just remove that.

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