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337 Posts

11-13-2010

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Re: P50 / P70 linux experiences ?

2016-06-30, 18:33 PM

Dude, that is exactly what I and many people have examined in my earlier posts. The conclusion is that kernel 4.6-rc5 is not compatible with Nvidia drivers for external monitors. I suggest you to upgrade the kernel to 4.6.3 (4.6.2 has some problems as well) which is what I have suggested in my last post. So far, I haven't encountered any problem. Since you are using one 4k screen, there may not be a good linux kernel solution for it from what I read (I don't have 4k screen). Kernel 4.7-4.8 may be able to solve the essential problems as advertized. Be aware of it. 

 

I know there are possibly too many posts to read, but they can be helpful before installing linux on your computer. Good luck!

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TPs own: X31 (2003), X61T, X200T, Tablet 2, P50 (2016); Win XP-10, Ubuntu8.04-16.04.
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29 Posts

02-21-2016

DE

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Re: P50 / P70 linux experiences ?

2016-06-30, 19:38 PM

I don't really need the Nvidia card at all for my work, but I would like to use an external monitor. I can select the Nvidia card, but then the fan noise is annoying. With the Intel graphics enabled, the laptop is silent, unless I give it some real work to do, which is OK.

 

Has anyone managed to get a stable setup where the Intel graphics card is enabled and routed through the Nvidia card,  so that an external monitor can be connected? If so, is it stable enough that you can unplug the monitor and use the laptop screen, and then plug it in again without having to log out, etc.? I'm assuming that the Nvidia card would not produce so much heat if it is only being used to display the Intel graphics output.

 

 

 

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2 Posts

06-30-2016

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Re: P50 / P70 linux experiences ?

2016-06-30, 19:53 PM
Oh sorry, but I read so much posts last few days ... Now I updated kernel to 4.6.3 -> same result. I don't have a 4K monitor. What's wrong? Difference between P50 and P70 or specs? Being not a computer/linux nurd I wonder, why it works on login screen?
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12 Posts

03-01-2016

HU

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Re: P50 / P70 linux experiences ?

2016-07-06, 21:28 PM

Hi i2000s,

For me Bumblebee is the best solution (it can be upgraded in stock rpm, therefore I do not think that it is stalled). I do not have to login / logout, I can decide to use nvidia card for any application - practically I made icons for these on the desktop and then you can start from menu with intel, while via icon with nvidia card.

And there is a small application, called bumblebee-indicator that shows always the changes of status of the nvidia usage.

Bumblebee for itself is installing the most recent nvidia driver.

Issues are only with the intel card, as it requires kernel newer than 4.3, otherwise there is only a preliminary support in the kernel, that is buggy...

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337 Posts

11-13-2010

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Re: P50 / P70 linux experiences ?

2016-07-06, 22:03 PM

@Schnulli Have tried to press Fn + F7 (to switch screens) for several times? My computer in Ubuntu did some weird things too. It may only mirror my primary screen if I press the Fn+F7 keys for a few times, but then it extend my primary screen if I press more times. I don't understand what caused this, but this is what works for me for now.

 

@Mobave, yes, I am following the Blumblebee project on Github. I didn't make it work in the early days (April) when I constantly experiencing login loop problems for the compatibility problems between Nvidia drivers and Linux kernels. I have asked a main contributor of the Blumblebee project, and he suggested me to wait for the upcoming release of V4.0. The last release of a stable version of Blemblebee was back in April 2013, and since then a lot of things have been changed but not released yet. In the mean time, those issues should be solved by new drivers and kernels, but I haven't tried for productivity reasons. If you have successfully installed Blumblebee on your Lenovo mobile workstation, I appreciate if you (or maybe others) can provide some brief instructions on how to make it work. Otherwise, I will wait to see the new release. 

-----------------------------------------------------------------------------
TPs own: X31 (2003), X61T, X200T, Tablet 2, P50 (2016); Win XP-10, Ubuntu8.04-16.04.
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10 Posts

07-10-2016

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Re: P50 / P70 linux experiences ?

2016-07-10, 6:41 AM

Hello all, glad to see there's a sizable linux community using this device. I just recently purchased a P50 (basic configuration, but replaced the hdd with a Samsung 950 pro and upgraded RAM right after receiving it).

 

I'm running Ubuntu 16.04. I was considering dual-booting but windows was mind-blowingly unstable after cloning to the new Samsung SSD and I decided that life is too short to waste time troubleshooting Windows problems and just did a pure linux install.

 

In general, I'm quite happy. Everything important worked out of box, the system is blazingly fast, and the computer had about 4.5 hour battery life with moderate use (my old System76 computer barely had 2 hours when new, so 4+ is great for me).

 

A couple of annoying things I'm still trying to fix:

  • Module signing: I don't want to disable secure boot but need to use virtualbox and other self-compiled modules. Theoretically it's possible to sign these yourself, but it appears that Thinkpad firmware might not support the neccesary UEFI command (see the issue report at shim's github page here, along with a comment from the main developer hypothizing that it could be the same problem that he's seen with some Lenovo server firmware).
  • Power Management: using sudo powertop, I can see that my package power state doesn't go below pc2 (face-palm). While it's impressive that it still has almost 5 hours of battery-life even with this problem, I can't imagine that this is good for the processor. I'm also guessing this is the main reason why people are reporting 2 hours less battery life than with windows. In addition to the official Ubuntu kernel (4.4.0-28-generic), I tried installing 4.6.3-040603-generic and 4.7.0-040700rc6-generic from the ubuntu kernel team repository. The good news is that both seem to be pretty stable. The bad news is that they don't seem to improve my ability to drop into lower power states. If anything, 4.7 might have even made things worse--before I seemed to be using about 17w on battery, and now I seem to be using about 30w. I've been changing a number of things though, so it's have to tell what caused this. At this point I'm not sure whether it's a problem with the intel code in the kernel, or if it's some other device (dead fingreprint reader, PC card reader, etc.) that's preventing the lower power states. Would be nice to hear what other users are seeing in powertop.

 

I still haven't put a serious effort into using the discrete graphics yet. Until I get the module signing figured out, I'd need to disable secure-boot to use the nvidia module and I can't figure out how to switch to nouveau with prime-select (I get "Error: the installed packages do not support PRIME"). I might just give up and disable secureboot next weekend so I can start testing the discrete graphics.

 

Looking forward to keeping in touch with everyone and working through some of these bugs/unsupported functionalities together.

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11 Posts

07-16-2016

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Re: P50 / P70 linux experiences ?

2016-07-16, 16:37 PM

Has anyone managed to get external video output working flawlessly while using hybrid (optimus) mode on the P70?  i.e., no need to logout or reboot, no vsync issues on internal or external monitors, HDMI audio works, etc

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29 Posts

02-21-2016

DE

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Re: P50 / P70 linux experiences ?

2016-07-18, 20:53 PM

Has anyone managed to get Skype working on the P70 with Ubuntu-16.04?

Skype installs and runs and the other person can see me fine, but the video I see is flickering

(Using the Intel video). I read that kernel 4.6 solves the problem, but I don't want to make

the system unstable... (Is it?)

 

 

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337 Posts

11-13-2010

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Re: P50 / P70 linux experiences ?

2016-07-19, 22:50 PM

wrote:

Has anyone managed to get external video output working flawlessly while using hybrid (optimus) mode on the P70?  i.e., no need to logout or reboot, no vsync issues on internal or external monitors, HDMI audio works, etc


I suggest you to wait for the Bumblebee V4.0 to release (coming soon). If you want to try the nightly built version, please add the testing PPA channel to your update source. Here is a workaround for W541 on Ubuntu which may work for P70: https://www.youtube.com/watch?v=5nGbWE-pvIE

 

Let us know how's that going.

 

 

-----------------------------------------------------------------------------
TPs own: X31 (2003), X61T, X200T, Tablet 2, P50 (2016); Win XP-10, Ubuntu8.04-16.04.
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11 Posts

07-16-2016

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Re: P50 / P70 linux experiences ?

2016-07-20, 12:38 PM

I actually don't own a P70 yet, I should have made that more clear...I'm wondering if any P70 owners have got linux tear-free internal/external video working because back in April I was talking with someone on another forum and he was having issues with that on his P70.

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