Bug 1368432

Summary: drm_crtc_helper_set_config *ERROR* failed to set mode on crtc
Product: [Fedora] Fedora Reporter: Don Swaner <Gecko8211>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: unspecified    
Version: 24CC: gansalmon, Gecko8211, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2017-01-27 13:09:37 UTC Type: Bug
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Description Flags
dmesg from recent reboot none

Description Don Swaner 2016-08-19 11:36:26 UTC 
Created attachment 1192115 [details]
dmesg from recent reboot

Description of problem:
When machine is booted, the following error occurs:
... kernel: [drm:drm_crtc_helper_set_config [drm_kms_helper]] *ERROR* failed to set mode on [CRTC:32:crtc-1]

Version-Release number of selected component (if applicable):
kernel-core-4.6.4-301.fc24.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Reboot

Actual results:
Get error message in dmesg and journal.

Expected results:
No error message.

Additional info:
I've been getting this message for many years.  My desktop works fine.  I needed to add "video=1280x1024@60" boot parameter to get the console screen geometry correct.  Otherwise console also works fine, except recently console fonts sized 18-24 are almost all garbled (bug 1356243), which is likely unrelated.  dmesg attached.
Comment 1 Laura Abbott 2016-09-23 19:13:51 UTC 
*********** MASS BUG UPDATE **************
 
We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs.
 
Fedora 24 has now been rebased to 4.7.4-200.fc24.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you have moved on to Fedora 25, and are still experiencing this issue, please change the version to Fedora 25.
 
If you experience different issues, please open a new bug report for those.
Comment 2 Don Swaner 2016-09-24 10:35:50 UTC 
Symptoms are same with 4.7.4-200.fc24: the error message still appears at boot; if video=1280x1024@60 is not added to the boot line, then the geometry of the virtual console is wrong - otherwise everything works fine.  (The garbled console fonts were corrected with a previous kernel release, and there is no regression - the console fonts work fine.)
Comment 3 Don Swaner 2017-01-27 13:09:37 UTC 
My 10 year old PC is a "media center" edition and includes a TV crt output, in addition to the digital monitor output.  Apparently the error message pertains to this not-used crt output, and is essentially irrelevant, to me.