TechTablets › Forums › Cube Forums › Cube i9 Forum › Linux (debian) on cube i9
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April 29, 2016 at 10:36 pm #35576
Very nice!!
Thanks for sharing.May 5, 2016 at 5:53 pm #36207Wow!!! Thank you so much man. Let’s hope that the issue with Skylake CPU’s family will be fixed soon. :'(
May 6, 2016 at 7:34 pm #36295Cheers, glad to be of assistance.
Regarding battery life – I find it acceptable and it’s in no way catastrophic. I still get a good 6-7 hours at ~50% back light – running build chains, watching videos along with web browsing. Hopefully an upcoming kernel will be able to make the CPU enter the higher sleep states…
May 22, 2016 at 9:50 am #38232I’m happy to hear it! However I’m scared to damage the CPU using linux (as claimed by the documentation provided by intel) so I’ll wait for a patch before to buy the tablet. Did you try to install powertop and check the Idle stats? Just to know if the deepest power saving state is only PC3.
May 23, 2016 at 10:12 pm #38413Hey,
It’s firmly stuck in the PC2 package state – not sure what’s preventing it from going lower in to one of the lower states. Running 4.6 and I’ve updated the BIOS (and, implicitly, microcode). It’s probably some device that’s preventing deeper sleep, I’ve yet to determine the cause though.
Package | Core | CPU 0 CPU 2 | | C0 active 5.1% 5.3% | | POLL 0.1% 3.8 ms 0.0% | | C1E-SKL 6.9% 1.9 ms 1.6% C2 (pc2) 51.6% | | C3 (pc3) 0.0% | C3 (cc3) 2.7% | C3-SKL 2.3% 1.5 ms 0.6% C6 (pc6) 0.0% | C6 (cc6) 4.6% | C6-SKL 4.6% 1.3 ms 2.0% C7 (pc7) 0.0% | C7 (cc7) 61.5% | C7s-SKL 0.0% 0.3 ms 0.0% C8 (pc8) 0.0% | | C8-SKL 21.2% 2.9 ms 31.1% C9 (pc9) 0.0% | | C9-SKL 0.0% 0.0 ms 0.0% C10 (pc10) 0.0% | | C10-SKL 54.0% 10.3 ms 52.2% | Core | CPU 1 CPU 3 | | C0 active 3.4% 3.7% | | POLL 0.0% 0.0 ms 0.2% | | C1E-SKL 3.3% 0.8 ms 6.9% | | | C3 (cc3) 0.7% | C3-SKL 0.2% 0.3 ms 0.7% | C6 (cc6) 7.2% | C6-SKL 4.4% 0.9 ms 5.7%May 25, 2016 at 3:14 pm #38572Thanks a lot for the response. Even worse than what I expected. 🙁
I think we have to wait for an update of Linux Kernel for solve this problem, and surfing the web it seems to be not so easy also for the kernel developers. Moreover, I sent a tweet to Intel support asking if they are planning a solution to the problem but they just replied that this CPU family has not Intel support for Linux but only for Windows 10.
June 21, 2016 at 7:32 pm #41670alright really thinking of doing this. anyone have tips on DE, good programmas, etc?
July 12, 2016 at 7:08 am #43227Hello,
I received my Cube i9 yesterday, and hopefully it’s working fine. I’m going to put Linux on it besides Windows 10.
So far I’ve simply booted a USB Live Ubuntu 16.04, and it’s quite promising. Everything apart from wifi (didn’t test bluetooth yet) worked well, even the touchpad gestures.
Beware, I tried booting that same Ubuntu after flashing the optimized BIOS, and it didn’t work (only black screen). I guess some of the modifications introduced a regression in the detection of the bios capabilities, or something like that. Unfortunately I don’t have the kernel output, so it’s hard to tell what went wrong.
Next step will be partitionning, installing, and configuring the OS so that it can be used as a tablet. Gnome Shell and Unity are the two best options so far, I’d say. I hope the onscreen keyboard won’t be too basic.
July 12, 2016 at 10:23 pm #43310Hey guys i am really interested in buying this tablet. Can anyone confirm if the power-saving-state bug is fixed with linux 16.04 ? Or with the testing kernel ver 4.4.6-1 ?
Thanks!
July 13, 2016 at 5:26 am #43330Not fixed as of yet in latest 4.6-trunk.
FWIW, I’ve been running linux on the thing for a while now, with no ill side effects. Except slightly worse battery performance compared to w10.
Intels cautionary clause regarding long term negative impact on the SoC due to not entering lower power states isn’t specific to skylake, btw.
July 13, 2016 at 7:08 am #43335@rohtang: did you succeed making wifi work on linux 4.6 ? I tried yesterday without success.
It seems it has been integrated into the main trunk, in the rtl8xxxu driver, but it didn’t find any wifi network when I tried it.
Also I’ve tried the lwfinger driver with 4.6.3, but it doesn’t seem to work either. However maybe it was conflicting with rtl8xxxu now, I have to check again…More generally, frankly, using Ubuntu on a tablet without a keyboard is still very combersome. I’ll try to improve the situation, but I don’t know how far that’ll go.
July 13, 2016 at 8:16 am #43338Thank you both. I am still thinking about buying it, to replace my n2820 toshiba laptop. I just think its a bit overpriced. In this price tag i would like to have the keyboard as a standard and maybe a laminated screen (not to mention the copper mod)
July 13, 2016 at 3:09 pm #43366Not fixed as of yet in latest 4.6-trunk. FWIW, I’ve been running linux on the thing for a while now, with no ill side effects. Except slightly worse battery performance compared to w10. Intels cautionary clause regarding long term negative impact on the SoC due to not entering lower power states isn’t specific to skylake, btw.
I read that this problem was specific to just the “mobile” Skylake processors. Also, a potential workaround given here… http://forums.fedoraforum.org/showpost.php?s=0ce4d064306e55f2f265e8c6fb621c5b&p=1766502&postcount=24
The most noticeable issues with earlier kernels were video glitches (the GPU would hang) and power management with the mobile Skylake chips, which are used in the NUCs. (The CPU is intended to automatically drop down to reduced power states when it’s able. There were indications that the chip did (or does) not do that on Linux. Intel publishes a disclaimer for its recent chips, including Haswell, that such behavior could shorten the chip’s life span.)
To compensate for the power issue, I installed and used Powertop, which is a tool intended to manage and limit power consumption on laptops (and NUC’s are essentially laptops in a little box). Installing it in Fedora sets up a Systemd service that can be enabled. On my NUC, this allowed the CPU to enter some of those reduced power states.
July 13, 2016 at 3:20 pm #43367July 15, 2016 at 9:36 am #43550FYI, I disabled the rtl8xxxu driver on linux 4.6.3 and can now use the lwfinger driver without any issue.
I am on the latest Cube bios (V11), but not the optimized one, as the latter prevented the touchscreen to be detected by linux 4.6.3. It could also be an issue with the touchscreen firmware, which I didn’t update, but right now it doesn’t really matter. I’ll stick to bios V11 + kernel 4.6.3., which works well
Some issues left, regarding the use as a tablet:
– get rid of the touchpad edge gestures, both on Windows and Linux, because it’s really annoying.
– Multitouch touchscreen works with Gnome Shell 3.20, but for the touchscreen each app has to implement its own multitouch input management, so it means I don’t get the 2-fingers-scroll to work with Firefox or Terminal. I’m still hoping to find a solution…
– I can’t use the Grub boot menu with the Vol+/Vol- keys, which means I have to have the keyboard attached if I want to select another boot option. Maybe it’s just a shortcut to configure in Grub, I don’t know yet.
– Orientation change doesn’t work in Gnome Shell. Maybe it is detected (I’ll have a look in the iio-sensor-proxy logs), but it doesn’t trigger anything.
– Wayland Gnome Shell 3.20 works well… apart from the touchscreen, where it’s worse than with X. No-Go for the moment.
– Onscreen keyboard is a mess, as I already said before. I couldn’t yet find one that works for Firefox text inputs…
However, don’t get the wrong message: with the Cube keyboard, using Linux on the tablet is a quite smooth experience!
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