C201 Chromebook : boot sequence after kernel

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C201 Chromebook : boot sequence after kernel

Postby sleo » 2015-08-29 16:33

Hello,

I am trying to setup a debian sid on my Chromebook (Asus C201 / Rockchip ARM).
I've followed the howto here : https://wiki.debian.org/InstallingDebianOn/Asus/C201
Debootstrap ok, config ok, kernel repack ok... everything went fine until the first boot.

When i boot from the sd card, nothing seem to happen. The screen stay black, no text appear.
Back in chromeos, i check the syslog and the kernel did load successfully.
Code: Select all
Aug 29 16:10:32 armbox systemd[1]: Startup finished in 2.256s (kernel) + 1.798s (userspace) = 4.054s.

It seems after the kernel loads, nothing happen next.
Any thought about what i did wrong ?

Kernel is on mmcblk1p1
Rootfs is on mmcblk1p2
My kernel config is :
Code: Select all
console=tty1 printk.time=1 nosplash rootwait root=/dev/mmcblk1p2 rw rootfstype=ext2 lsm.module_locking=0

Thanks for your help
sleo
 
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Re: C201 Chromebook : boot sequence after kernel

Postby kapouer » 2015-11-07 08:51

The wiki tells you to copy the kernel from /dev/mmcblk0p1 partition, but there are actually several partitions,
and one of them contains a kernel that works on your c201 variant.
Please reread the wiki, i've copied some text from samsung chromebook wiki page,
around "cgpt show /dev/mmcblk0"
kapouer
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2015-11-17 09:26

I've been following the instructions very carefully in this tutorial https://wiki.debian.org/InstallingDebianOn/Asus/C201. I have tried different kernels present on the chromebook. When I copy the commands I cut and paste from another window on the chromebook being very careful about not missing them out.

What ever I have done I have always had the blackscreen.

I'm not saying the Tutorial has a mistake somewhere in the instructions , it maybe because my model of chromebook is the C201PA.

Would there be any chance of a downloadable ISO with the firmware? I would love you long time!
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby kapouer » 2015-11-17 09:40

[quote="tonygair"]I've been following the instructions very carefully in this tutorial https://wiki.debian.org/InstallingDebianOn/Asus/C201. I have tried different kernels present on the chromebook. When I copy the commands I cut and paste from another window on the chromebook being very careful about not missing them out.

What ever I have done I have always had the blackscreen.

I'm not saying the Tutorial has a mistake somewhere in the instructions , it maybe because my model of chromebook is the C201PA.

Would there be any chance of a downloadable ISO with the firmware? I would love you long time![/quote]

If i remember well, when i tried the first time i had a similar situation.
Only when i repacked the /dev/mmcblk0p4 kernel it works.
Which kernel partition has the highest priority on your cgpt table ?
kapouer
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2015-11-17 12:59

It was Kern B , I did then try A and even C after :).

I don't remember there being a repacking of the kernel in the instructions so that sounds very hopeful.

How would I do that?
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby kapouer » 2015-11-17 13:06

I said repack because of
vbutil_kernel --repack...

i suppose you did run that command, and dd the kernel back to your sd's partition.
kapouer
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2015-11-17 13:10

Yes I did.
I was thinking it might be the model which is the asus c201pa, is that your model
So did you do anything different from following the instructions?
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby kapouer » 2015-11-17 13:40

Nothing really different, besides getting the wrong kernel the first time.
Mind that linux 4.4 or 4.5 is going to be able to boot that machine, so
you might want to wait for that.
kapouer
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2015-11-17 14:08

When are those kernels due do you know?
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby sunrat » 2015-11-18 23:23

tonygair wrote:When are those kernels due do you know?

Soon.
“ computer users can be divided into 2 categories:
Those who have lost data
...and those who have not lost data YET ”
Remember to BACKUP!
User avatar
sunrat
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2015-12-10 12:20

\o/ look forward to it
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby jalcock501 » 2016-01-28 12:31

Just curious did you ever get it working?
jalcock501
 
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Re: C201 Chromebook : boot sequence after kernel

Postby raviqqe » 2016-02-27 06:17

I have the same problem exactly.

But, there is a hope that when I tried Arch Linux ARM[1] for Hisense Chromebook C11 (which has the same processor),
it booted with text messages but the modules and WiFi didn't work well.
Moreover, I following the tutorial of Gentoo[2] using the kernel of Arch Linux ARM, it also booted well.
The cause may be the kernel from the original Chrome OS, I guess.
I will try to compile it by myself and dd it to the kernel partition on my SD card.

[1] http://archlinuxarm.org/platforms/armv7 ... mebook-c11
[2] http://www.codentium.com/journal/gentoo-chromebook.rst
raviqqe
 
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Re: C201 Chromebook : boot sequence after kernel

Postby tonygair » 2016-03-21 12:12

Not me either. Still waiting for a debian armhf distro with kernel 4.4-4.5
tonygair
 
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Re: C201 Chromebook : boot sequence after kernel

Postby C-137 » 2016-05-27 15:52

i ran into the exact same problem following that howto with the flip (C100PA). it sort of boots but the screen stays blank (the logs show it's doing something, http://hastebin.com/ufocoboteq.tex ).

i've tried it with the archlinuxarm kernel ( https://archlinuxarm.org/platforms/armv ... stallation ) and it boots. however, all the kernel modules are wrong, so that didn't work...
i've never compiled a kernel myself. i guess, i'll try that next...

has anyone made any progress or has any ideas? i prefer to eventually put the system on the emmc and i don't want to use crouton. it's only been two days of messing with it. so i'm still kinda invested...
C-137
 
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