Lenovo T460p Post 7.4 CR Possible Problems

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I have updated my laptop to 7.4 CR this morning and found that there have been a lot of logs on two fronts for the first time.

1. The kernel has indicated overheating:

[Sat Aug 26 08:58:21 2017] CPU2: Core temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU4: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU6: Core temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU0: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU6: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] mce: [Hardware Error]: Machine check events logged
[Sat Aug 26 08:58:21 2017] CPU2: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] mce: [Hardware Error]: Machine check events logged
[Sat Aug 26 08:58:21 2017] CPU1: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU5: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU3: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU7: Package temperature above threshold, cpu clock throttled (total events = 1)
[Sat Aug 26 08:58:21 2017] CPU2: Core temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU4: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU1: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU5: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU0: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU6: Core temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU3: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU7: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU6: Package temperature/speed normal
[Sat Aug 26 08:58:21 2017] CPU2: Package temperature/speed normal

This happened when logging into a Cinnamon desktop. The desktop background would go black when this happened and the fans went to
100%. After two minutes it quieted down. Logging in again with Cinnamon repeated it. Using the default Gnome desktop does not have this problem so this is more of a “if you are using Cinnamon you may run into this.”

The second was that the new nouveau driver is very noisy on the hardware. The message repeats:

Sat Aug 26 13:42:36 2017] nouveau 0000:02:00.0: priv: HUB0: 6013d4
00005700 (1f408200)
[Sat Aug 26 13:42:37 2017] nouveau 0000:02:00.0: priv: HUB0: 10ecc0
ffffffff (1940822c)
[Sat Aug 26 13:42:37 2017] nouveau 0000:02:00.0: DRM: resuming client object trees…
[Sat Aug 26 13:42:44 2017] nouveau 0000:02:00.0: DRM: evicting buffers…
[Sat Aug 26 13:42:44 2017] nouveau 0000:02:00.0: DRM: waiting for kernel channels to go idle…
[Sat Aug 26 13:42:44 2017] nouveau 0000:02:00.0: DRM: suspending client object trees…
[Sat Aug 26 13:42:44 2017] nouveau 0000:02:00.0: DRM: suspending kernel object tree…
[Sat Aug 26 13:42:45 2017] nouveau 0000:02:00.0: DRM: resuming kernel object tree…
[Sat Aug 26 13:42:45 2017] nouveau 0000:02:00.0: priv: HUB0: 6013d4
ffff57ff (18408200)
[Sat Aug 26 13:42:45 2017] nouveau 0000:02:00.0: priv: HUB0: 10ecc0
ffffffff (1840822c)
[Sat Aug 26 13:42:45 2017] nouveau 0000:02:00.0: DRM: resuming client object trees…

fairly often. The system does seem to be running hotter with the fan going louder than what i remember it being with 7.3. At this point I
am mostly reporting this as a “anyone else seeing this?” type report.

5 thoughts on - Lenovo T460p Post 7.4 CR Possible Problems

  • It means it’s time to open up your’ laptop and evict all the dust bunnies.  it’s overheating on one desktop but not the other because one of your’ desktops, as configured on your system is using the processor more.  this is how laptops die as most people just whine and complain as their’ laptop gets slower and less stable. 

    the first part to fail is often the hard drive.  hard drives can operate hot but it greatly shortens the drives lifetime.  on my desktop i try to keep my drives below 100deg F. they last forever practically then, where as around 120-130 you get fairly rapid failures. 

    It’s a major, major pain to work on most laptop hardware but you have to do it.  i have such a laptop that ran hot until the drive failed, so i got a nice laptop free that needs a new drive and cleaning, or possibly a new fan (they aren’t running, either due to dust bunnies or failure”.  it’s a $300 laptop on ebay and i got it free because people ran it into the ground and they new i might be able to fix it.  if you do clean it out look for the repair manual so you can take it apart and get it back together correctly, and there are often good videos on youtube showing how for most models.


    The Power Of the People Is Stronger Than The People In Charge.

    26. Aug 2017 12:11 by smooge@gmail.com:

  • Also try package lm_sensors and its command sensors-detect, maybe just the temperature sensors are not properly initialized

  • might also use many of the nice gui applications, i frequently use gkrellm (sp?) if i suspect a problem or just want a good idea of everything happening (it also shows all drive activity per partition, network info, etc. including all the temperature sensors it can fine.  alternately you might try a recent veraion of “hiren’s” utilities, easy to find for download, very, very usefull and it include utilities to load the processor and heat it up to check stability.  then again, i know the cd for windows xp and the installer are a good check aswell, if stability is marginal the installer will repeatedly fail in the same place when it’s decompressing all the files which is of course a lot of math, and math makes cpus run hotter.  lm sensors is always one of the first things i install, then you can also watch drive temps in the panel.  after you install lm_sensors you need to run , i believe, sensors-detect with root privalages so it can prob for all the sensors, there are a lot of little known busses in most machines and it tries to search them all looking for sensors.  though i don’t know how to monitor the fan sensors.


    The Power Of the People Is Stronger Than The People In Charge.

    26. Aug 2017 13:05 by vychytraly@gmail.com:

  • I did think that, but the box is brand new (aka 4 weeks old) but even so I did open it up to find no clogs. It seems instead linked with the updated kernel and drivers in CR. [There is only one laptop involved in this problem.]

  • you might check bios setting, processor throttling may be turned off, or it may well be a kernel or a virus issue (i assume some viruses care about the desktop enviroment).  i suspect, slightly, a virus as they are usually resource hogs, which makes them easilly detectable to someone who knows how thier machine normally runs.  note that some viruses/exploits hide from the system monitor. 

    i’ve repeatedly had one in the past that shows up with no name sporaticly using the kde system monitor, and the ‘OWNER” is listed as “root-1”, which is impossible to search for as all the search engines insist on evaluating the “-” character as “any puctuation etc.”, meaning they’ll all return as if you said “root 1”, meaning any page with “root” and 1 on it somewhere, weather you use advanced search or just quote it.  it’s spooky, when it was a problem i just nuked and repaved root.  i’d love to know more, but like i said all of the search engines evaluate quoted text to some extent.  gone are the days when you can enter a random part number and actually find pages associated with it.  when i’ve detected it was because the machine seemed slow. it  uses a lot of resources and makes the machine feel slower.


    The Power Of the People Is Stronger Than The People In Charge.

    26. Aug 2017 13:19 by smooge@gmail.com:

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