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nelsonwcf
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PostPosted: Thu Apr 21, 2016 1:51 am    Post subject: Gentoo Install - Questions: Reply with quote

Hi all,

I have some questions/issues that I couldn't address using neither Gentoo guides nor manpages. Hope you guys can help me:

1. Wireless card (Intel Wireless 7260) takes around 1 minutes to appear as an interface and is causing some problems in the kernel booting. What could be causing this delay? Is this common for Wireless cards? (This is currently the main issue - the other ones are just minor stuff).

2. For some reason, when I compile the msdos and vfat as modules, I can't load them later to mount partitions. I'm using modprobe msdos and modprobe vfat but they simply don't load without returning any error. Did I forget something in the kernel, maybe?

3. Why there is no visible options in kernel to disable modules anymore?

4. During the boot screen (the one that some colorful penguins appear), I noticed some error in the last lines but they are too fast for me to see them. How can I check the boot screen log? Some documentation says that I could check it through dmesg but it is not the same screen as in the boot time.

Thank you!
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Buffoon
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PostPosted: Thu Apr 21, 2016 2:00 am    Post subject: Reply with quote

1. Problem loading firmware
2. Can't tell, you didn't tell what's the error
3. Can't understand the question - do you mean "Enable loadable module support" in main menu?
4. See dmesg, enable bootlog in rc.conf
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The Doctor
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PostPosted: Thu Apr 21, 2016 2:03 am    Post subject: Reply with quote

1) is not normal. Maybe something else is failing with a 1 minute timeout and then loading your wifi?
dmesg might be informative.

2) maybe you didn't install the kernel modules? make modules_install

3) not sure about this, but don't you need modules?

4) edit /etc/inittab and add the noclear option to tty1. It should look something like c1:12345:respawn:/sbin/agetty 38400 --noclear tty1 linux
_________________
First things first, but not necessarily in that order.

Apologies if I take a while to respond. I'm currently working on the dematerialization circuit for my blue box.
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nelsonwcf
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PostPosted: Thu Apr 21, 2016 2:30 am    Post subject: Reply with quote

Buffoon wrote:
1. Problem loading firmware
2. Can't tell, you didn't tell what's the error
3. Can't understand the question - do you mean "Enable loadable module support" in main menu?
4. See dmesg, enable bootlog in rc.conf


Question one here may be the key. I followed the instruction from gentoo wireless, which recommends me to emerge the firmwares. Now, getting deeper into this question, how can I track what is happening here?

For the second question, I can't tell you the error because even modprobe -v {msdos,vfat} doesn't return anything and I don't know where to look for a deeper log.

Third is exactly that. I'm trying to build a moduleless kernel this time to test things but for some reason I can't find that option there. I mean, it is in the .config file but it is not visible in menuconfig and I was wondering if this was something from gentoo customized emerged kernel.

The fourth one is fixed. Thanks.
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nelsonwcf
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PostPosted: Thu Apr 21, 2016 2:32 am    Post subject: Reply with quote

The Doctor wrote:
1) is not normal. Maybe something else is failing with a 1 minute timeout and then loading your wifi?
dmesg might be informative.

2) maybe you didn't install the kernel modules? make modules_install

3) not sure about this, but don't you need modules?

4) edit /etc/inittab and add the noclear option to tty1. It should look something like c1:12345:respawn:/sbin/agetty 38400 --noclear tty1 linux


1) Suspected as much. dmesg is not being very useful here.

2, 3) Trying to test the kernel without any modules

4) Helped, and the error is regarding wlan0 interface, which is not ready for some reason.

Thanks!
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Buffoon
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PostPosted: Thu Apr 21, 2016 3:38 am    Post subject: Reply with quote

1. grep dmesg for firmware
2. no error means module was loaded successfully, follow up with lsmod
3. no modules means you need to build firmwares into kernel, too
my kernel has enabling/disabling modules in main menu, yours does not?
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324874
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Joined: 26 Jul 2014
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PostPosted: Thu Apr 21, 2016 5:58 am    Post subject: Reply with quote

Hi,

nelsonwcf wrote:
... for some reason I can't find that option there. I mean, it is in the .config file but it is not visible in menuconfig and I was wondering if this was something from gentoo customized emerged kernel.


It seems these options depends on other options that aren't activated. These options will become visible if all requirements are met.

Gentoo wiki wrote:

For example :
Quote:
KERNEL Example output after searching for HCIBTUSB
Symbol: BT_HCIBTUSB [=m]
Type : tristate
Prompt: HCI USB driver
-- Location:
----> Networking support (NET [=y])
-------> Bluetooth subsystem support (BT [=y])
(1)------> Bluetooth device drivers
-- Defined at drivers/bluetooth/Kconfig:5
-- Depends on: NET [=y] && BT [=y] && USB [=m]



Best regards,

neoptslap
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nelsonwcf
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Joined: 31 Oct 2012
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PostPosted: Thu Apr 21, 2016 12:58 pm    Post subject: Reply with quote

Thank you for the help. Regarding the firmware, it seems the problem was indeed with the firmware. iwlwifi gentoo page guidelines don't work for the current kernel version, so I had to download the firmware manually from (https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi). After it was downloaded and loaded directly into the kernel, the firmware issue has been solved.

Now I'm going to check why I can't load modules after booting.
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