Description of problem: When I press Fn-F2 key combination (for blanking laptop LCD screen) on Lenovo G550 kernel crashes Version-Release number of selected component (if applicable): kernel-3.1.0-0.rc9.git0.0.fc16.x86_64 on Fedora 15 How reproducible: Always Steps to Reproduce: 1. start Fedora 2. press Fn-F2 keystroke Actual results: laptop lcd screen goes blank Expected results: laptop lcd goes blank and then kernel crashes Additional info:
There was an error above, corrected description of results is given here: Actual results: laptop lcd goes blank and then kernel crashes Expected results: laptop lcd screen goes blank
Without a backtrace there's not much anyone can do with this.
Created attachment 529426 [details] photo of an lcd of crashed kernel
Sorry, I haven't found any traces of the crash in the message.log. The only think I can do now is to take a photo of the screen (attached). Let me know If you want me to do some other test, generate (somehow) backtrace.
Sorry, I haven't found any traces of the crash in the message.log. The only think I can do now is to take a photo of the screen (attached). Let me know If you want me to do some other test, generate (somehow) backtrace. When I connected external LCD I found that kernel crashes not when screen is going black but when I press Fn-F2 for the second time to unblack it. And the photo is what I see on the screen then.
in kernel 3.1.0-0.rc10.git1.1.fc16.x86_64 problem still persists
kernel 3.1.0-1.fc16.x86_64 is equipped with the bug as well
the bug is still here: kernel 3.1.0-5.fc16.x86_64
I'm wondering if your G550 shouldn't be using this ideapad module. (Or it's possible Lenovo changed how the hardware works without changing the ident that causes this module to load). dwmw2, any ideas ?
I don't know which one module G550 should use, but ideapad module from kernel-2.6.40 does well. So, definitely something was broken later. Unfortunately kernel-3.2.0-0.rc0.git3.0.fc17.x86_64 hits the same problem
*** This bug has been marked as a duplicate of bug 748210 ***