Like the OP, my Centos7 install utterly destroyed itself when the driver suddenly quit working I am still finding missing software to reinstall weeks later, and catching up on the lost sleep. I did not use bumblebee at that time - just manually switched in bios and rebooted when I need to add / remove external video - I guess it didn't "like" that, so walking on egg-shells to try to make external video possible, again.
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# lspci
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro K2000M] (rev ff)
- good, so both video hardware options are available.
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# nvidia-detect
kmod-nvidia
Optimus hardware detected: An Intel display controller was detected
Either disable the Intel display controller in the BIOS
or use the bumblebee driver to support Optimus hardware
Ok, so ...
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yum install bumblebee
Package bumblebee-3.2.1-10.el7.elrepo.x86_64 already installed and latest version
(A lucky guess the first time, since the instructions did not show what to enter or where.)
Everything in the "Procedures as of September of 2015" here has been done:
http://elrepo.org/tiki/bumblebee
Also rebooted several times - and that "reboot" is the instruction provided. I am guessing they overlooked what we are supposed to "just know" to do next?
Adjusting the "faq" for Centos7 (
https://github.com/Bumblebee-Project/Bu ... leshooting ), I did this ...
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# tail -200 /var/log/messages
...
Feb 25 15:22:32 localhost systemd: bumblebeed.service holdoff time over, scheduling restart.
Feb 25 15:22:32 localhost systemd: Started Bumblebee C Daemon.
Feb 25 15:22:32 localhost systemd: Starting Bumblebee C Daemon...
Feb 25 15:22:32 localhost bumblebeed: [968092.947881] [ERROR]Module 'nvidia' is not found.
Feb 25 15:22:32 localhost systemd: bumblebeed.service: main process exited, code=exited, status=1/FAILURE
Feb 25 15:22:32 localhost systemd: Unit bumblebeed.service entered failed state.
Feb 25 15:22:32 localhost systemd: bumblebeed.service failed.
So "Module 'nvidia' is not found" by bumblebee, but nvidia-detect said I needed to install bumblebee, which I did, and rebooted, so that bumblebee could tell me the nvidia-module isn't installed, but bumblebee was supposed to fix that, so ... (running in circle here).
From the FAQ for this error msg:
You can find this message in your syslog when the configured nvidia driver is invalid, you might need KernelDriver=nvidia-current for example. Find out the name by executing find /lib/modules/$(uname -r) -name 'nvidia*.ko*' ... Can't find the nvidia module? Then ensure that you the module is built. You will need the kernel headers matching your kernel and maybe some patches if you run a very recent kernel with a slightly older nvidia driver.
And with that, we are thrown into the ocean to go googling. Not even a helpful link with a step by step. I could post the pages of things tried from my searches, but none worked - so rather than post un-helpful, non-working attempts from a non-OS-engineer, can someone direct me to the correct procedure to obtain the needed "kernel headers matching your kernel and maybe some patches"?
