Bug 1353061

Summary: 4.6.3-300 not booting on Lenovo X1 Carbon
Product: [Fedora] Fedora Reporter: Rich Jankowski <richard.c.jankowski>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 24CC: bminish, didierg-divers, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab, richard.c.jankowski
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-07-15 13:20:26 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Boot message none

Description Rich Jankowski 2016-07-06 01:05:11 UTC
Created attachment 1176677 [details]
Boot message

Description of problem:After upgrade to Kernel 4.6.3-300, X1 Carbon (2016) with Skylake does not boot.


Version-Release number of selected component (if applicable): 4.6.3-300


How reproducible: Removed kernel, reinstalled, same issue. No problems with 4.5 kernels.


Steps to Reproduce:
1. Update kernel on X1 (2016)
2. Reboot
3.

Actual results:


Expected results:


Additional info:

Comment 1 Josh Boyer 2016-07-06 01:32:52 UTC
Is the attached message the only thing you see on the screen?

If you remove 'rhgb' and 'quiet' from the kernel command line, does this still happen?

If so, does 'nomodeset' help?

Comment 2 Rich Jankowski 2016-07-06 02:15:20 UTC
Yes, the attachment is where it hangs after removing rhgb and quiet. I tried nomodeset, and it hangs at "Probing EDD (edd=off to disable)... ok"

I added edd=off, and just get a black screen.

Comment 3 Didier G 2016-07-15 13:17:33 UTC
I just bought a new ASUS UX305UA-FC057T who includes 

* Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
* Skylake Host Bridge/DRAM Registers

It boots fine with kernel-4.5.5-300 and kernel-4.5.7-300

It hangs, black screen, with kernel kernel-4.6.3-300 and kernel-4.6.4-301

Looking at http://forums.fedoraforum.org/showthread.php?p=1766662 it seems we are not alone with this problem....

Comment 4 Josh Boyer 2016-07-15 13:20:26 UTC
https://www.happyassassin.net/2016/07/07/psa-failure-to-boot-after-kernel-update-on-skylake-systems/

*** This bug has been marked as a duplicate of bug 1353103 ***

Comment 5 Didier G 2016-07-15 13:26:55 UTC
Thanks for your answer.

I have to wait for "better fixes".