pr.probability – Martin's constant kernel and susceptibility

Consider a random walk with finite support in a discrete group G so that the support generates G as a semi-group. Martin's cores are non-negative functions in the product G x M where M denotes Martin's limit of the random walk. Does anyone know an example with susceptible G in such a way that there is no point m in the Martin limit for which the function K (., M) is constant 1? And does anyone know an example of a non-susceptible group for which there is an element m in the Martin boundary such that the corresponding Martin kernel K (., M) is constant 1?

registration: there is no kernel registration when connecting the device

I would like to get information about the USB keyboard that I just connected to my Linux host (USB device shared from a Host, using vmware).

Usually, I hope to see a message inside /var/log/kern.log, but nothing appears.

rsyslog is set up like this, it seems fine:

root@shinwey# grep kern /etc/rsyslog.*
/etc/rsyslog.conf:module(load="imklog")   # provides kernel logging support
/etc/rsyslog.conf:kern.*                                -/var/log/kern.log

I tried to increase kernel verbosity without success:

root@shinwey:/var/log# echo 28 > /proc/sys/kernel/printk
root@shinwey:/var/log# cat  /proc/sys/kernel/printk
28      4       1       7

Do you have any clue why nothing appears and how to fix it?


kernel – How to install Ubuntu LTS (18.04) on a system for which there are disk drivers only in the latest version other than LTS?

I have in my hands a great ASUS UX481F (ZenBook Duo) that works surprisingly well ready to use (including network and disk) with Ubuntu 19.10 live USB, but Ubuntu 18.04 liveUSB and MinimalDisk is too old to recognize. the discs

Do I have any option to install Ubuntu 18.04 anyway?

I can see two theoretical solutions:

  1. Include a newer kernel (for example, using HWE or UKUU) in the installer (if that is possible). If I had an option, I'd rather use the Ubuntu 18.04 MinimalCD image instead of the standard liveCD.
  2. Downgrade Ubuntu 19.10 to 19.04: I have seen the instructions on the blog:

The questions:

  1. Which option is preferable?
  2. How do I update the kernel in the (minimum) liveCD image
  3. Has anyone managed to downgrade the Ubuntu version 19.10 to 18.04?

The best practice to install kernel files along with OpenCL programs?

OpenCL cores are compiled at runtime, so they must be installed together with the program (if you are using separate .cl files, like me). Are there best practices regarding where to install kernel files? At the moment, I am not even 100% sure if the files are searched in PATH or only in the working directory.

OpenVZ kernel update problem | Web Hosting Talk


I have a node with SolusVM installed, which runs in the OpenVZ kernel version: 2.6.32-042stab123.9 with / vz separate partition in LVM as follows:

root @ MyNode [~] # df -hT / vz
File system Type Size Used Available Use% Mounted on
/ dev / mapper / VG02-LV02
ext4 689G 387G 268G 60% / vz
root @ MyNode [~] #

I need to upgrade to the last stable kernel, but unfortunately after booting into that new kernel, Node loses the LVM partition.

In another sense, you can't detect it! and I can't find the / vz partition, and as a result, no VPS starts!

Any ideas to solve this problem?

Is the source code of xnu-6153.60.66 ~ 39 available? (Kernel iOS 13.3)

I can not find xnu-6153.60.66~39 at! Does Apple still open the core code XNU?

Ubuntu 18.04.3 LTS installation from usb lock with kernel panic Bad RIP value

This is the first time I try to install Ubuntu.
I have an old Acer laptop with Windows installed and I am trying to install Ubuntu 18.04.3 from a bootable USB.
The installation lock with an incorrect RIP value.

I also tried adding the noapic flag but a similar error occurred

I re-created the USB several times and checked the USB sha1, all good.

Thanks in advance.

update: kernel update problem

I was trying to install wacom on my laptop with Ubuntu 18.04.3 LTS. I realized that "the minimum version of the kernel that natively supports the tablet" is 4.16. When I checked the kernel on my laptop using uname -mrs, I see that it is 4.15.0-72-generic.

So, I thought I would update the kernel. I tried to do it using the update to 4.16 kernel (it doesn't work) and tried to install ukuu.

Next is the exit

praphulla@localhost:~$ sudo apt-get install ukuu -y
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ukuu : Depends: aria2 but it is not installable
        Depends: curl but it is not installable
E: Unable to correct problems, you have held broken packages.

How to solve this problem to update the kernel?

SELinux permissive kernel: does it have the same security risk as the SELinux permissive ROM?

As in the title. I'm talking about Kernel, not ROM (many questions about ROM on this site).

I have a OnePlus 7 with Android 10 stock and I prefer a custom kernel. Lately, OnePlus has not released the source for the kernel and this has wreaked havoc on all custom cores in OnePlus 7 and other variants. So, I want to flash a kernel
That is independent of the changes made by One Plus. The only problem is that it is SELinux permissive and therefore I want to understand the security risks

Sparse matrices: NearestTo causes a kernel lock when applied to a list of Sparse matrices

Nearest and Nearest To cause a kernel crash in Mathematica 12.0.0 for Mac OS X. (running on OS X 10.11.6) when operating on a list of SparseArray vectors.

Here is my minimum break example:

examples = {{0, 0, 1}, {0, 1, 1}, {1, 0, 1}}
sparseExamples = SparseArray /@ examples

NearestTo(First@examples)@examples (*works OK*)

NearestTo(First@sparseExamples)@sparseExamples (*causes a kernel crash*)

This seems to be limited to Nearest and NearestTo; Other functions such as DistanceMatrix work well in SparseArrays.

DistanceMatrix(sparseExamples) (*works OK*)

This seems to be a "new" problem; There are a couple of posts from ~ 18 months ago that imply that Nearest plays well with SparseArrays:

It is also a bit surprising, given the number of different data types in which Nearest and NearestTo operate.