Comments for Beryllium https://martin.beryllium.net Ramblings about technology Fri, 27 Nov 2020 00:59:43 +0000 hourly 1 https://wordpress.org/?v=6.1.1 Comment on Linux on Lenovo Yoga C740 by Rodney Lamirand https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-1472 Fri, 27 Nov 2020 00:59:43 +0000 https://martin.beryllium.net/?p=47#comment-1472 I too am trying to make the fingerprint reader work in Ubuntu 20.04 LTS without success. It’s that or change my login to 1234. Jk! Any news from anyone on this yet?
Rod in Canada

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Comment on Linux on Lenovo Yoga C740 by john pfeiffer https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-1292 Fri, 10 Jul 2020 21:07:46 +0000 https://martin.beryllium.net/?p=47#comment-1292 I installed Linux Mint 20 using itsfoss.com How to install dual boot (beginners guide). I got Mint 20 installed. All hardware works. The pen does not want to calibrate. The onscreen keyboard icon works but when I swing the screen to tablet configuration, I can’t get the icon to bring up the screen.
The bigger issue: now the system will not boot into Windows 10, says the files are damaged. I think I have to start over; re-load Windows from the recovery disk, then re-install Mint 20 and see if it works on a second try. I may have made a mistake but I think not, fearing I will be doing the same thing a 2nd time and expecting different results.
Ideas?

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Comment on Linux on Lenovo Yoga C740 by p-try https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-1286 Thu, 02 Jul 2020 14:09:29 +0000 https://martin.beryllium.net/?p=47#comment-1286 In reply to Ralph.

Yes, I have experienced the same thing and I have also turned off the screen blanking because of it. I believe that this has happened in Windows too, though.
What I find much more annoying is that this fan thing also frequently happens when I shut the lid and the system is supposed to go to sleep. It apparently does go to sleep as I can see the power light on the right flashing slowly but very often the fan will go really nuts and continue to spin for hours even though the system is in sleep mode. Once I put the laptop into my bag and when I took it out later the fan was still spinning wildly and the battery was almost dead.

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Comment on Linux on Lenovo Yoga C740 by Alex https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-1282 Thu, 25 Jun 2020 16:58:04 +0000 https://martin.beryllium.net/?p=47#comment-1282 Hi Martin!
Thank you for your writeup on your experience setting up Ubuntu on your Yoga C740.
Did you have any issues getting your hotkeys to work?
Specifically, I’m not seeing any scancode output from the display brightness adjustment keys (F11/F12). Wondering if you had a fix for this, or it was a non-issue.

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Comment on Linux on Lenovo Yoga C740 by Ralph https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-805 Thu, 07 May 2020 22:15:06 +0000 https://martin.beryllium.net/?p=47#comment-805 In reply to Martin Poelstra.

Tried that, but there no visible processes or kernel threads with any sort of CPU load. In fact the load average reports as 0.0/0.0/0.0. I left “top” running and “journalctrl -f” and neither gave any clue.

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Comment on Linux on Lenovo Yoga C740 by Martin Poelstra https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-793 Wed, 06 May 2020 20:55:17 +0000 https://martin.beryllium.net/?p=47#comment-793 In reply to Ralph.

Haven’t experienced that, no. Fan seems to work as expected here.

Perhaps log in through ssh while it’s happening to see what causes the load?

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Comment on Linux on Lenovo Yoga C740 by Ralph https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-792 Wed, 06 May 2020 19:07:50 +0000 https://martin.beryllium.net/?p=47#comment-792 In reply to p-try.

Curious if other folks are experiencing odd fan behaviour when screen turns off?

Fan seems reasonable otherwise:
– loud whine and lots of warm air when CPU is working hard (make -j8)
– fan is silent when machine is idle

But after 5 minutes idle, screen turns off, and then the fan cycles on/off at low speed every 5 to 15 seconds. Happens regardless if running on battery or AC.

I worked around it by turning off the screen blanking (“none” instead of 5 mins).

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Comment on Linux on Lenovo Yoga C740 by p-try https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-759 Sun, 03 May 2020 10:10:28 +0000 https://martin.beryllium.net/?p=47#comment-759 In reply to Ralph.

I can confirm this. I would like to add that the sound from the speakers has become a lot louder than it previously was on 19.10. It seems they got the other speakers working.

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Comment on Linux on Lenovo Yoga C740 by Ralph https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-679 Fri, 24 Apr 2020 19:07:58 +0000 https://martin.beryllium.net/?p=47#comment-679 Hi Martin et al.,

I just installed the freshly released Ubuntu 20.04 LTS on my C740, along with all currently available updates.

Working: Wifi, sound (speaker and microphone), touchpad, touchscreen, webcam.
Hotkeys for volume, mute, all working except for brightness (can set via menu though).
Not working: fingerprint (not detected).
Untested: suspend

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Comment on Linux on Lenovo Yoga C740 by Martin Poelstra https://martin.beryllium.net/2019/09/23/linux-on-lenovo-yoga-c740/#comment-517 Tue, 07 Apr 2020 15:57:08 +0000 https://martin.beryllium.net/?p=47#comment-517 In reply to Jan Kässens.

As an update to your comment, these instructions didn’t work as-is for me, but following the instructions here did: https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_7)#Audio

Both speakers and microphone now work, nice!

UPDATE 20200408: Guess I cheered too early. If I keep Sound Settings open, it works, but if I close it, pulseaudio keeps segfaulting. Seems known already: https://bbs.archlinux.org/viewtopic.php?id=254408

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