Bug 1329112

Summary: Failed to read EDID output with a USB-C to HDMI Display Adapter
Product: [Fedora] Fedora Reporter: Akın Ömeroğlu <akinomeroglu>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 24CC: akinomeroglu, charkins, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2016-10-10 12:17:15 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Journalctl output none

Description Akın Ömeroğlu 2016-04-21 08:57:32 UTC
Created attachment 1149369 [details]
Journalctl output

Description of problem:

I am using an updated version of Fedora 24 in Lenovo yoga 900 laptop which has have only USB-C output for an external display.

I bought a USB-C to HDMI adapter (bestek) and when I connect my laptop to external display (A full hd 60 hz tv) I can not change resolution for 1920*1080 and 16:9 view. The only resolution is 1024*768 and 4:3 

Version-Release number of selected component (if applicable):

My kernel version is 4.5.1-300.fc24.x86_64
 

Steps to Reproduce:
1. Login to desktop
2. Connect a usb-c to hdmi adapter to computer
3. Wait for the signal and connection to TV
4. Check resolution
5. Check values in settings and display

Actual results:

The resolution is only 800*600 and 1024*768 with 4:3 view

Expected results:

I expect to see all resolution supported by TV

Additional info:

You can find some logs attached from my system when I connect and disconnect adapter

Comment 1 Akın Ömeroğlu 2016-06-12 16:56:28 UTC
Some additional comments:

Adapter works if I add a new mode which is matching with tv via xrandr commands. So it is obvious that Fedora could not read correct edid codes from adapter.

Thanks,

Comment 2 Laura Abbott 2016-09-23 19:12:55 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 3 Akın Ömeroğlu 2016-10-10 12:17:15 UTC
Hello,

This problem is solved in an updated version of Fedora. I am closing report. 

Thanks for your effort and support for Fedora.