Acer C720/C720P Chromebook

nariox · 2016-09-12 18:26:55

@LeoFa: Thank you very much! Hope this will also fix my wonky wifi after suspend

mum1989 · 2016-11-27 21:50:45

"joebonrichie commented on 2016-03-07 02:24

I currently rarely use my chromebook or keep up to date with upstream/xorg changes and haven't maintained this package in a long time so I just hope any new changes work."

https://aur.archlinux.org/packages/xf86-input-cmt-git/

(so curently i use classic synaptic package)

Last edited by mum1989 (2016-11-27 21:50:57)

kostett · 2017-02-23 09:42:16

I cannot boot x86_64 in archlinux-2017.02.01-dual.iso on my c720 chromebook. It's rebooting after "Probing EDD... ok". SeaBIOS boot enabled by default, but I can to boot i686 only.
What I forget to do?
UPDATE: gentoo minimal install + archlinux bootstrap. Nice to work with.

Last edited by kostett (2017-02-25 12:16:41)

rdeckard · 2017-02-23 14:12:35

mum1989 wrote:

(so curently i use classic synaptic package)

You should use libinput. synaptics is no longer updated.

gothmog123 · 2017-04-26 21:54:53

Hey guys, I'm occasionally getting a random hard system freeze nowadays on my c720. Anyone else notice this?

nassi · 2017-04-27 01:18:22

gothmog123 wrote:

Hey guys, I'm occasionally getting a random hard system freeze nowadays on my c720. Anyone else notice this?

No problems here. Currently running kernel 4.10.8-1-ARCH (haven't rebooted in a while) on a 2GB 2955U variant. Original SSD and all. Using a Cypress touchpad if that matters.

Have you tried looking at journalctl? Might also be a good idea to check the SSD (smartctl from smartmontools package) and the memory (memtest86).

Are you using mem=1920M as a kernel boot parameter? I had occasional unresponsiveness before adding it (to /etc/default/grub in my case).

gothmog123 · 2017-04-27 09:31:25

Thanks, I added mem=1920M

I had journald turned off cause I wan't sure it can log errors from a hard freeze. Anyway we'll see if anything shows up.

No errors from smartctl.

Last edited by gothmog123 (2017-04-27 09:32:23)

melkir · 2018-01-04 03:17:25

Hi there,
I'm having some trouble with the audio on my acer c720p with Arch Linux and Gnome 3.

Step to reproduce :
1) Plug HDMI then select the HDMI audio output in the settings panel (this is not automatic for me)
2) Unplug the HDMI cable
At this step, I can hear the bip sound when I increase or decrease the volume but nothing comes out from Chrome or VLC.
However the speakers output is selected as intended in the setting panel.

The only workaround to fix this is to plug the HDMI cable, and select speaker before unplugging the HDMI otherwise I'm stuck...

Someone have ever experienced this ?

nariox · 2018-01-04 15:29:10

@melkir,
yes, happened to me. I could workaround it by restarting pulseaudio as well. But I guess this is a upstream GNOME issue, maybe you should try reporting it there?

nariox · 2018-05-29 19:34:49

Not sure if anyone still following this thread, but I've recently found out about iuvolt. It allows undervolting Haswell+ cpus. The improvement is small, but measurable.
Running mine with -60 -80 -100

vilefridge · 2018-06-03 16:58:09

Well, it's 2018 and I'm still using the same awesome little Acer C720 Chromebook (with a new battery). I noticed that there was a xkeyboard-config added for the chromebook keyboard as of 2.16-1 that I was previously mapping with xbindkeys. When I activate the xkeyboard-config chromebook definition, oddly enough, my right arrow and down arrow keys stop working. Has anyone else bumped into this issue? Any ideas?

Last edited by vilefridge (2018-06-03 16:59:01)

nariox · 2018-06-04 13:44:40

@vilefridge: not sure, works fine on my machine. Maybe you have something in your config conflicting with the new xkeyboard configs?

alfalfa · 2018-06-05 01:17:56

gothmog123 wrote:

Hey guys, I'm occasionally getting a random hard system freeze nowadays on my c720. Anyone else notice this?

Yes, I encountered some problems since 4.9.9-2-ARCH. A lot of CPU power is wasted on hardware interrupts which sometimes caused my system to freeze (see https://bugzilla.kernel.org/show_bug.cgi?id=199329). I suggest you try the LTS kernel.

vilefridge · 2018-06-10 20:16:25

nariox wrote:

@vilefridge: not sure, works fine on my machine. Maybe you have something in your config conflicting with the new xkeyboard configs?

After a recent system update, one of these package upgrades seems to have fixed my problem:

[2018-06-10 01:58] [ALPM] upgraded xf86-input-evdev (2.10.5-1 -> 2.10.6-1)
[2018-06-10 01:58] [ALPM] upgraded xkeyboard-config (2.23.1-3 -> 2.24-1)
[2018-06-10 01:58] [ALPM] upgraded xorg-xkbcomp (1.4.1-1 -> 1.4.2-1)
[2018-06-10 01:58] [ALPM] upgraded xorg-server-common (1.20.0-5 -> 1.20.0-6)
[2018-06-10 01:58] [ALPM] upgraded xorg-server (1.20.0-5 -> 1.20.0-6)

nariox · 2019-09-20 18:15:46

alfalfa wrote:

gothmog123 wrote:
Hey guys, I'm occasionally getting a random hard system freeze nowadays on my c720. Anyone else notice this?
Yes, I encountered some problems since 4.9.9-2-ARCH. A lot of CPU power is wasted on hardware interrupts which sometimes caused my system to freeze (see https://bugzilla.kernel.org/show_bug.cgi?id=199329). I suggest you try the LTS kernel.

Hi @alfalfa,

seems like the problem is with coreboot (you can see some of the discussion here: https://github.com/MrChromebox/firmware/issues/68). You can use JL's coreboot script for better battery life (but sadly no UEFI...).

Last edited by nariox (2019-09-20 18:16:14)

intika · 2019-10-22 10:35:59

Hello all, owners of this nice machine... am posting just to clarify something about the light sensor following my post here
https://github.com/kootenpv/brightml/is … -544899110

The kernel module isl29018 does load but `/sys/bus/iio/devices` is empty... so not all c720x have a sensor... here is some pics. (just posting for pple with the same issue)

Last edited by intika (2019-10-22 10:40:48)

n8henrie · 2019-11-07 15:40:14

FWIW, my Arch Acer C720 has been running pretty well since around 2014, but it looks like there's a kernel issue with 5.3.7-arch1-2 and 5.3.8* that prevents it from detecting its network adapters, which has been trouble to figure out. On boot, my network adapters are missing -- `ip link` only shows `lo`. I haven't found anything particularly interesting in dmesg or the systemd logs, so I'm not sure what's going on (probably missed something).

If a downgrade to 5.3.7-arch1-1 or 5.2* it works fine.

Definitely convinced me to install the LTS kernel as a backup.

Just wanted to post in case anybody else is still rocking the old Arch C720.

EDIT: blacklisting gsmi seems to fix it, for me and others:

https://bbs.archlinux.org/viewtopic.php?id=250332
https://bugs.archlinux.org/task/64302
https://www.reddit.com/r/archlinux/comm … dium=web2x

Last edited by n8henrie (2019-11-07 16:25:33)

Arch Linux

#1076 2016-09-12 18:26:55

Re: Acer C720/C720P Chromebook

#1077 2016-11-27 21:50:45

Re: Acer C720/C720P Chromebook

#1078 2017-02-23 09:42:16

Re: Acer C720/C720P Chromebook

#1079 2017-02-23 14:12:35

Re: Acer C720/C720P Chromebook

#1080 2017-04-26 21:54:53

Re: Acer C720/C720P Chromebook

#1081 2017-04-27 01:18:22

Re: Acer C720/C720P Chromebook

#1082 2017-04-27 09:31:25

Re: Acer C720/C720P Chromebook

#1083 2018-01-04 03:17:25

Re: Acer C720/C720P Chromebook

#1084 2018-01-04 15:29:10

Re: Acer C720/C720P Chromebook

#1085 2018-05-29 19:34:49

Re: Acer C720/C720P Chromebook

#1086 2018-06-03 16:58:09

Re: Acer C720/C720P Chromebook

#1087 2018-06-04 13:44:40

Re: Acer C720/C720P Chromebook

#1088 2018-06-05 01:17:56

Re: Acer C720/C720P Chromebook

#1089 2018-06-10 20:16:25

Re: Acer C720/C720P Chromebook

#1090 2019-09-20 18:15:46

Re: Acer C720/C720P Chromebook

#1091 2019-10-22 10:35:59

Re: Acer C720/C720P Chromebook

#1092 2019-11-07 15:40:14

Re: Acer C720/C720P Chromebook

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