Acer C720/C720P Chromebook

dhead · 2015-03-22 21:21:25

Anyone else on linux 4.0rc4?

I'm not sure what going on but when X is running I can't reboot, the system just freeze when trying to reboot, no issue if I don't have an X session running.
Also running '# suspend' doesn't work.
On the other hand I don't need 'tpm_tis.interrupts=0' in my kernel parameters (as expected), '# systemctl suspend' works and it also enter suspend when closing the lid.

joebonrichie · 2015-03-24 21:12:32

First Thing
The dell 11 backlight quirk has been merged in linux 4.0.0
https://github.com/torvalds/linux/blob/ … y.c#L13136

Second Thing
The issue where the cmt input driver module does not load also applies to gdm 3.16 when loading a x session.

I think I will need a libevdev package with necessary chromiumos code added to it replacing libevdevc to fix the issue or if there is some way to force load the module.

dhead wrote:

Anyone else on linux 4.0rc4?
I'm not sure what going on but when X is running I can't reboot, the system just freeze when trying to reboot, no issue if I don't have an X session running.
Also running '# suspend' doesn't work.
On the other hand I don't need 'tpm_tis.interrupts=0' in my kernel parameters (as expected), '# systemctl suspend' works and it also enter suspend when closing the lid.

No issues for me, if you have a btrfs file system install btrfs-progs.

Last edited by joebonrichie (2015-03-25 02:02:12)

dhead · 2015-03-25 20:14:54

@joebonrichie

Thanks, I'm initiating Gnome 3.14 X session with startx.
Per your response I tested GDM which seems fine with X session but not with Wayland session (i.e trying to reboot will freeze the machine)..

p.s.
I tried the latest 2015.03.01 installation media and x86_64 works great with stock fw, I'll remove the manual instructions from the wiki (we can always add this info back if it be relevant again).

dhead · 2015-03-25 20:47:59

p.s.2 I'm now with Gnome 3.16 and systemd 219, no issue for initiating X session with startx.

mum1989 · 2015-03-26 11:11:31

Hi, I want to save my SSD on my C720p with Clonezilla, but it doesn't work.

I've got this message
"This disk contains mismatched GPT and MBR partition"
in the faq of Clonezilla :
http://drbl.org/faq/fine-print.php?path … _table.faq

can do that ? or it will erase the disk ?
edit : it Will erase my partition table

Thanks

Last edited by mum1989 (2015-03-26 14:20:59)

dd0 · 2015-03-26 17:19:33

EDIT: Never mind, it somehow fixed itself, mystery.

Today I installed Plasma alongside with some updates and after a reboot touchscreen of my C720P doesn't work regardless of which DE/WM/DM I use. Looking at logs I'm suspecting it's result of some unrelated update, likely kernel. Here's a log output, reloading the module has same effect: kernel: atmel_mxt_ts 1-004a: Direct firmware load for maxtouch.cfg failed with error -2 Anyone have similar experience or know the issue?

Today I installed Plasma alongside with some updates and after a reboot touchscreen of my C720P doesn't work regardless of which DE/WM/DM I use.
Looking at logs I'm suspecting it's result of some unrelated update, likely kernel.

Here's a log output, reloading the module has same effect:
kernel: atmel_mxt_ts 1-004a: Direct firmware load for maxtouch.cfg failed with error -2

Anyone have similar experience or know the issue?

Last edited by dd0 (2015-03-26 18:10:32)

melkir · 2015-03-29 16:51:52

Hi,
Just tried wayland session with xf86-input-cmt-xorg, it's works fine except for the trackpad/touchscreen. For example I can't click with a presure on the pad or scroll with the pad.
It's seems that the configuration files are related to X11, so is there a solution to port this on wayland ?

Last edited by melkir (2015-03-29 16:52:51)

dhead · 2015-03-29 16:56:20

@melkir

Are you trying a Gnome 3.14 Wayland session? in 3.16 the devs improved the handling of touchpad (at least for tab-to-click which finally working).

melkir · 2015-03-29 17:04:49

Thx dhead, yes it's 3.14 Wayland. I'll upgrade to 3.16

r3d4 · 2015-03-30 08:35:44

Hi,

if someone is missing an old school HDD-Led on the C720, I put together some little daemon that switches the blue Power-LED into dualcolor HDD-/Power-LED. HDD activity is then indicated by orange color.

just checkout:
https://github.com/r3d4/cb_hddledd

Last edited by r3d4 (2015-03-30 08:36:17)

templrivanho · 2015-04-11 02:57:19

I believe I figured out the problem with the touchpad not loading the cmt driver. If you just want the fix, see the TL;DR section below:

After doing all manner of things (including trying the latest kernel [4.0] RC), I decided to try and look into this bug. After reading the Xorg log through the systemd journal I came across a couple of lines indicating Xorg's inability to load the driver, most importantly:

[...] /usr/lib/gdm-x-session[493] (**) cmt: Cypress APA Trackpad (cyapa): Opening Device: "/dev/input/event12"
[...] /usr/lib/gdm-x-session[493] (**) cmt: Cypress APA Trackpad (cyapa): Cannot Open: "/dev/input/event12"

This seemed like a permission problem to me, as all other Xorg messages related to finding and loading modules (especially in regards to /dev/input/event) worked correctly.

After doing a little research, I came across a few articles regarding Xorg and input devices with something to the effect that the group 'input' controls permissions in regards to whether Xorg can see and access input devices due to the same group being listed as owning everything in /dev/input/ (specifically all of the event devices).

So putting 2 and 2 together, I decided to test the theory that perhaps GDM did not have the correct permissions. As such, I added the group 'input' to the user 'gdm' with:

sudo usermod -a -G input gdm

After this, I rebooted and voila! The touchpad was now working correctly at the login screen! However, as soon as I logged in the touchpad did not work again. After re-reading the Xorg log, the touchpad did indeed load the cmt module correctly, but errored out once I was logged in. So I decided to do the same thing with my own user account, in this case 'thomas':

sudo usermod -a -G input thomas

After another reboot and login the cmt driver was now working correctly for everything!

After this ,I did a little bit more investigating to see exactly why Xorg was acting this way by running "ps aux | grep Xorg". From the looks of things, Xorg is actually running as two separate processes, one under the user 'gdm' and one under my own user 'thomas'. My guess is this why there are two separate tty's running at any given time when GDM is started: one for GDM itself and one for the user currently logged in. (One can verify this by simply switching to the first tty once logged into GNOME and then back to the next, the second tty in my case.)

TL;DR: There seems to be a permissions problem in regards to GDM being able to access the touchpad in the corresponding event file in /dev/input/. To alleviate this for the time being simply run (as root):

usermod -a -G input gdm
usermod -a -G input <user>

Where <user> is the username you are trying to use when logging into GNOME. After this, reboot, and the touchpad should be working as expected.

I added this as a comment to the current bug report for the cmt driver: https://github.com/hugegreenbug/xf86-input-cmt/issues/5

joebonrichie · 2015-04-11 11:42:50

Awesome thanks templrivanho, can confirm its working with Gnome/GDM 3.16

It appears I didn't need to run the command

# usermod -a -G input gdm

when using gdm 3.16

It appears that all I need to run is:

# usermod -a -G input <user>

This fixes the module not loading when using both 'startx' and when using gdm 3.16.
I tested this on on gnome 3.16 using both gdm and 'startx' to start gnome-session. I also tested 'startx' with mate-session.

xf86-input-cmt-xorg in the AUR updated.

Last edited by joebonrichie (2015-04-11 15:54:17)

mum1989 · 2015-04-16 19:39:00

hi
i buy SSD transcend 256go but ...:
in wiki i read this https://wiki.archlinux.org/index.php/Ch … nd_remarks :
" Transcend MTS400 M.2 NGFF SSD drives are failing (at least with stock Coreboot firmware) when ALPM is enabled, ATM there's no SSD firmware update that fixing this bug, so it's highly advisable to disabled ALPM if a power management daemon has been installed (which enabled it), see Resolving SATA power management related errors and how to disable ALPM in Chrome OS."

how to desable ALPM in archlinux ?

edit resolved its here :
https://wiki.archlinux.org/index.php/La … Intel_SATA

Last edited by mum1989 (2015-04-16 20:52:34)

scot14 · 2015-04-18 15:37:29

Bug #40637 (referenced at https://wiki.archlinux.org/index.php/Ch … stallation ) has been closed.

dhead · 2015-04-18 19:17:29

dhead wrote:

Haswell GT1 GPU bugs update:
...
* The third issue is a regression of xf86-video-intel 2.99.917, running X on vt1, changing to tty2 and back will make the desktop (Gnome) unresponsive. Chris tested this in Ubuntu and didn't saw any problem so this might be Arch packaging specific, I'm waiting for someone else to confirm it at https://bugs.archlinux.org/task/43534 .
Notice that for the extra logging I used kernel parameter drm.debug=0xe .

The bug has been fixed by Intel's dev, again by Chris Wilson (thanks for Vasily Khoruzhick for proper debuging), and the patch backported by the Arch maintainer of xf86-video-intel so latest 2.99.917-5 package.already include this fix, hurray!

scot14 wrote:

Bug #40637 (referenced at https://wiki.archlinux.org/index.php/Ch … stallation ) has been closed.

Thanks Scot, I updated the wiki.

@mum1989

Notice that you only need to disable ALPM if you installed a power management daemon as the kernel seems to default to max_performance (ATA_LPM_MAX_POWER), I believe you can confirm that with the Arch installation media (EDIT: which does not have a power management daemon enabled) by executing "# cat /sys/class/scsi_host/host*/link_power_management_policy" while device running from battery and from AC.

Last edited by dhead (2015-04-19 10:54:15)

mum1989 · 2015-04-19 08:48:35

ok, thanks, I don't installed anay power management daemon, Acer C720 work now.

carlosb777 · 2015-04-19 16:38:57

Hi friends.

I was trying to enable the internal mic of my notebook, but now the sound (speakers) are not working. Someone could help-me ? It's my notebook configuration. http://www.alsa-project.org/db/?f=02a56 … 7a5624fc33

Since now, thanks

Renard · 2015-04-21 19:03:37

Hello there,

Finally managed to find a C720 - took a while (the C720P is much more common here, but I didn't want a glossy screen) but definitely worth it and Arch runs fantastic on it. I set up LXDE + Openbox, as well as a few tweaks (ie, xkeyboard-config-chromebook, and volumeicon to handle the media key presses).

I have a few quirks I'm not sure how to solve though:
- I installed xfce4-power-manager in order to have a better battery icon, and handle the brightness keys. However, the Power button now no longer works (I didn't disable it). In xfce4-power-manager-settings, it's set to "Ask" on press, but I get no dialog not immediate shutdown. I'm guessing it tries to call XFCE's "Session logout" prompt instead of the LXDE one. Is it possible to either change this, or install XFCE's prompt separately (didn't find dedicated packages)? (side note: it works in xev)
- I'd like to set up cb-hddledd. I'm not sure how to install it as a daemon, and need some guidance here. I'm new to Arch and the instructions are for Ubuntu (I don't have update-rd.d on my system,for instance), plus, I could not find a scripts/cb-hddledd file to copy (I have the hddledd binary but I doubt I should copy that to a init.d directory of sorts).

Thanks for the help!

Last edited by Renard (2015-04-22 21:20:26)

LeoFa · 2015-04-21 20:11:48

r3d4 wrote:

just checkout:
https://github.com/r3d4/cb_hddledd

Really just checkout?.. seems to be specifically written for ubuntu.. got an AUR package? systemd service file?

sinetek · 2015-04-22 16:50:04

I have a C720p, running Linux on it for many months now. I'm getting regular crashes, it it very frustrating and I can't pinpoint exactly what it is. Sometimes the Xorg server restarts and brings me back to lightdm, but most of the time what happens is that the mouse coursor slows way way down and the whole machine becomes nearly unresponsive. Most of the time it is too slow, so I have to reboot. It seems to be a problem with the intel graphics driver (running 4.0 kernel). Has anyone seen this?

I'm running MATE.
Other than that, DragonFlyBSD seems to work pretty well on this laptop, but other issues occur with the Xorg.

Last edited by sinetek (2015-04-22 16:50:18)

hckr · 2015-04-26 17:53:55

I have the Transcend M2 SSD now on my chromebook. I'm not on Arch atm (using eOS), but the SSD was going frequently into read-only mode due to SATA errors. I've disabled SATA aggressive power management as per the instructions on the wiki (thanks whoever updated the Chrome OS Devices page for including that note). Hope that fixes it.

dhead · 2015-04-26 18:49:23

@hckr

You're welcome

@sinetek

I do experiencing slowdowns which seems caused due to low memory availability (C720 with 4GB RAM), the issue is that the memory consumption of some applications is too high (chromium, kodi, gthumb), I tried to debug this and relate it maybe to the graphic driver with only partial success (see https://bugs.freedesktop.org/show_bug.cgi?id=88716 ).

I don't reboot on slowdowns, I just switch to tty2 and kill the misbehaving app.
ATM (kernel 4.0) xorg is much more stable, I didn't needed to kill it since upgrading to xf86-video-intel 2.99.917-5.

The Atheros driver power saving mode is crap, I recommend on disabling it (see the c720 page) as it does seem to cause the system to freeze completely from time to time.

Last edited by dhead (2015-04-26 18:50:06)

melkir · 2015-04-26 21:27:10

Thx dhead for highlight the power saving problem, it's was enabled for me.

nariox · 2015-04-26 21:35:36

@dhead: aw man, I wish I had the 4GiB version... I also have trouble when memory gets low. Oddly enough the video seems to hang for a while (sometimes for a long time). I wonder if there's some memory corruption going on (?)
One thing you've mentioned that I'd like to know is, can you still access ttyN when you have these crashes? I'm using GNOME and the TTYs become unresponsive as well (generally just showing some debug info about USB language id specifier). I can still blindly login and kill applications, but the video stays stuck, anyone else experiencing this?

dhead · 2015-04-27 03:22:30

@nariox

ttyN works for me, though it does affected by the slowdown so it's a bit slow to respond (just until the memory hungry app is killed).

If you missed my previous posts, xf86-video-intel had a bug which messed up X when changing to ttyN and then back to X and ended with unresponsive X session (you can still for example press Super in Gnome, switch to tty2 and back to X and voila Gnome switched to the Activities Overview window, but again X would seem stuck).
If this is what you meant by stuck video then just update the system as it's fixed in xf86-video-intel 2.99.917-5.

Arch Linux

#901 2015-03-22 21:21:25

Re: Acer C720/C720P Chromebook

#902 2015-03-24 21:12:32

Re: Acer C720/C720P Chromebook

#903 2015-03-25 20:14:54

Re: Acer C720/C720P Chromebook

#904 2015-03-25 20:47:59

Re: Acer C720/C720P Chromebook

#905 2015-03-26 11:11:31

Re: Acer C720/C720P Chromebook

#906 2015-03-26 17:19:33

Re: Acer C720/C720P Chromebook

#907 2015-03-29 16:51:52

Re: Acer C720/C720P Chromebook

#908 2015-03-29 16:56:20

Re: Acer C720/C720P Chromebook

#909 2015-03-29 17:04:49

Re: Acer C720/C720P Chromebook

#910 2015-03-30 08:35:44

Re: Acer C720/C720P Chromebook

#911 2015-04-11 02:57:19

Re: Acer C720/C720P Chromebook

#912 2015-04-11 11:42:50

Re: Acer C720/C720P Chromebook

#913 2015-04-16 19:39:00

Re: Acer C720/C720P Chromebook

#914 2015-04-18 15:37:29

Re: Acer C720/C720P Chromebook

#915 2015-04-18 19:17:29

Re: Acer C720/C720P Chromebook

#916 2015-04-19 08:48:35

Re: Acer C720/C720P Chromebook

#917 2015-04-19 16:38:57

Re: Acer C720/C720P Chromebook

#918 2015-04-21 19:03:37

Re: Acer C720/C720P Chromebook

#919 2015-04-21 20:11:48

Re: Acer C720/C720P Chromebook

#920 2015-04-22 16:50:04

Re: Acer C720/C720P Chromebook

#921 2015-04-26 17:53:55

Re: Acer C720/C720P Chromebook

#922 2015-04-26 18:49:23

Re: Acer C720/C720P Chromebook

#923 2015-04-26 21:27:10

Re: Acer C720/C720P Chromebook

#924 2015-04-26 21:35:36

Re: Acer C720/C720P Chromebook

#925 2015-04-27 03:22:30

Re: Acer C720/C720P Chromebook

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