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kohina
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Joined: 21 Dec 2016
Posts: 9
Location: Finland

PostPosted: Mon Jan 09, 2017 1:00 pm    Post subject: mdev or else green screening openrc with several attempts Reply with quote

Hey gentooers, I have now installed gentoo three times (in a row) on my old core2duo computer in hopes of getting it back online and failed each time. Naturally I chose the amd64 version and so on. The problem is that each time I've booted OpenRC it just loads for a while and then green screens at mdev or whatever, mind you I used genkernel each time checking the options as I went.
My question is as follows: any ideas on what could cause this? Could I be missing something that is exclusive to amd64 types because of all the times I've installed gentoo I've always failed to install it on amd64 boxen whereas x86 boxen are a breeze.
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I was once surrounded by beautiful gentoo boxen but they've all withered away due to portagetic arrest (death resulting from portage failure). The atom, the core2duo, the athlon... may these brave souls find peace in the afterlife.
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khayyam
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PostPosted: Mon Jan 09, 2017 1:21 pm    Post subject: Re: mdev or else green screening openrc with several attempt Reply with quote

kohina wrote:
[...]The problem is that each time I've booted OpenRC it just loads for a while and then green screens at mdev or whatever [...]

kohina ... it's very unlikely you have mdev in your services, most likely sys-fs/eudev. The problem does sound like something in boot (possibly udev) is loading a framebuffer driver and so breaks KMS (or visa-versa ... KMS is loaded and you have a framebuffer enabled in the kernel). The current wisdom is that with DRM_KMS_* you shouldn't have CONFIG_FB_* enabled (except perhaps CONFIG_FB_SIMPLE). Can't provide any more than that guess without further details (.config, hardware, graphics chip, etc).

best ... khay
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NeddySeagoon
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PostPosted: Mon Jan 09, 2017 1:56 pm    Post subject: Reply with quote

kohina,

Quote:
... then green screens ...


We have seen this a number of times. The problem has been conflicting kernel drivers enabled in the kernel.
It happens when the conflicting kernel drivers begin to fight. Neither wins.

Pastebin your kernel .config.
Post the output of lspci.

You will need to help genkernel to make you a working kernel. khayyam has gone into more detail, so no need for me to repeat it.
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kohina
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Joined: 21 Dec 2016
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Location: Finland

PostPosted: Mon Jan 09, 2017 3:01 pm    Post subject: Re: mdev or else green screening openrc with several attempt Reply with quote

khayyam wrote:
kohina wrote:
[...]The problem is that each time I've booted OpenRC it just loads for a while and then green screens at mdev or whatever [...]

kohina ... it's very unlikely you have mdev in your services, most likely sys-fs/eudev. The problem does sound like something in boot (possibly udev) is loading a framebuffer driver and so breaks KMS (or visa-versa ... KMS is loaded and you have a framebuffer enabled in the kernel). The current wisdom is that with DRM_KMS_* you shouldn't have CONFIG_FB_* enabled (except perhaps CONFIG_FB_SIMPLE). Can't provide any more than that guess without further details (.config, hardware, graphics chip, etc).

best ... khay


Okay right. Thanks for this much information even without my config specifics. I think now I'll set up the livecd process and will fiddle with the kernel settings more. Will report if I find anything of value to others.

The setup:
Code:

pentium core2duo
8gb ram
Nvidia gt218 (geforce 405)
+all your standard intel controllers
+VIA technologies firewire controller for some reason



EDIT: I gave it another spin and this time it green screens at ACPI section. I made config_fb a module (menuconfig wouldn't let me N it) and fiddled around with the NVIDIA_FB setting. Perhaps this will be solved by my trial-error circle. Link to crash screen http://i.imgur.com/o7Jfrxt.jpg
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