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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 12-24-2015, 11:34 AM   #1
tpinheiro
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Registered: Dec 2015
Posts: 2

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Ubuntu 15 on Remix Cube i7 crashed


Hello all!

I'm new on the forum and some kind of new using Linux systems. I've been using Elementary OS for a year but then I decided to move to Ubuntu. Last month I bought a "Cube i7 Remix" and I tried to install linux on it. The tablet comes with Android 4.4 installed (Remix OS) but there's a very similar version of this tablet with Windows 8 pre-installed. So I was able to install and run Ubuntu on it. Some drivers weren't detected (such audio, bluetooth, wifi and others) but I got wifi working after following the tutorial described here.

It's incredible how fast Ubuntu runs on it, before trying to install and upgrade all the drivers, I still need to fix a little issue. No matter which distro I install (Lubuntu, Xubuntu, Ubuntu), it's boot perfectly and I'm able to do whatever I want, but after a while it crashes with no reason, I can't use the keyboard or mouse and I need to force it to restart by holding the power button.

I've been trying to check if there's any log but I couldn't find anything, any advice guys? I really want to work to get Linux working on this tablet, I think would be must powerful running Linux than Android.

Troubleshoot steps taken:

- Wipe all the internal memory and reinstall the SO
- Create a new Live USB with (GTP to EFI) Is the way I got it to boot.
- Tried to make all the updates (by it most of the times crashes in the middle of the process)
- Tried to remove any proprietary drivers (no results)

Is important to mention that when I'm running linux from the LIVE USB I have no issue, no matter for how long I use it.

Device specs:

- CPU: 64 bit Intel Z3735F quad core, X86- GPU: Intel HD Graphics Gen7
- RAM: 2GB DDR3L
- ROM: 32GB SSD
- Screen: IPS Capacitive touch screen
- Dual Camera: Support 2MP front camera, 5MP back camera -NOT WORKING
- Gravity Sensor: Yes - NOT TESTED
- Multi-Touch: Yes - NOT WORKING
- WIFI: 802.11 b/g/n - WORKS AFTER COMPILING THE DRIVER
- HDMI: support Micro HDMI - NO TESTED
- 3G: 3G dongle - NOT TESTED
- Bluetooth: V4.0 - NOT WORKING
- OTG: support - WORKING
- TF card: support up to 32GB - WORKING
- Loudspeaker: dual speakers - NOT WORKING

Any advice guys? Any place that I could look to get some light on it? I've been digging a lot before writing this thread, but since the device is quite new, there's no much information about it.
 
Old 01-19-2016, 04:20 PM   #2
jbMacAZ
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Registered: Jan 2016
Posts: 2

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I had a similar problem on a baytrail/Atom based device. Without any warning, the unit would stop responding to mouse, touchscreen, keyboard, etc and the display would be frozen. (I added the seconds field to the time display to catch the "freeze" faster.) The only option was to long press the power button. That *sounds* like what is happening to your Cube i7.

Take a look at these bug reports. freedesktop bug=88012, bugzilla. kernel-org bug=109051, while there is a variety of reports, most got good results with the suggested workaround.

The workaround (still not fixed) was to add an argument to the kernel command line. Try adding intel_idle.max_cstate=1 or intel_idle.max_cstate=0 to the kernel parameters. The Ubuntu application (Software Center) has a program "grub-customizer" that makes it easy to add that. In grub-customizer, go to the "General settings" tab and near the bottom of that screen is the kernel parameters text box. Take care not to erase the arguments already there, just add it to the beginning.

That bug is in the power saving. cstate=1 limits how aggressively power saving is achieved, so battery run time might be reduced a little. cstate=0 shuts off that part of the power saving, perhaps allowing the CPU to run a little warmer at idle - wasting power but no harm. The freeze rate varies considerably depending on the hardware and kernel version.

Disclaimer: not all freezes are related to cstates.
 
Old 01-21-2016, 10:46 AM   #3
tpinheiro
LQ Newbie
 
Registered: Dec 2015
Posts: 2

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by jbMacAZ View Post
I had a similar problem on a baytrail/Atom based device. Without any warning, the unit would stop responding to mouse, touchscreen, keyboard, etc and the display would be frozen. (I added the seconds field to the time display to catch the "freeze" faster.) The only option was to long press the power button. That *sounds* like what is happening to your Cube i7.

Take a look at these bug reports. freedesktop bug=88012, bugzilla. kernel-org bug=109051, while there is a variety of reports, most got good results with the suggested workaround.

The workaround (still not fixed) was to add an argument to the kernel command line. Try adding intel_idle.max_cstate=1 or intel_idle.max_cstate=0 to the kernel parameters. The Ubuntu application (Software Center) has a program "grub-customizer" that makes it easy to add that. In grub-customizer, go to the "General settings" tab and near the bottom of that screen is the kernel parameters text box. Take care not to erase the arguments already there, just add it to the beginning.

That bug is in the power saving. cstate=1 limits how aggressively power saving is achieved, so battery run time might be reduced a little. cstate=0 shuts off that part of the power saving, perhaps allowing the CPU to run a little warmer at idle - wasting power but no harm. The freeze rate varies considerably depending on the hardware and kernel version.

Disclaimer: not all freezes are related to cstates.

Thank you so much for your answer. For some reason while I'm running Ubuntu on the tablet, this recognize (for some reason) that the tablet is connected to the power, So I'm not sure if the freezes is related to the power saving. In any case I'll make some tests this weekend and I'll let you know
 
Old 02-04-2016, 01:12 AM   #4
jbMacAZ
LQ Newbie
 
Registered: Jan 2016
Posts: 2

Rep: Reputation: Disabled
FWIW "power saving" code runs all the time and most of my crashes occurred while plugged in. I hope the work around helped. I found another bug report (bugzilla kernel-org #109081) specifically for i7 processors - but it looks like the same issue.
 
  


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