Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-bloc(8,2) on Fedora 25 - linux-device-driver

The error occur when I follow a guide to install nVidia proprietary drivers on Fedora 25.
This is link website:enter link description here
I do step by step until I finish step 2.7 and reboot
Now I can not startup fedora 25
enter image description here

My guess is that on step 2.6.2 Edit /etc/sysconfig/grub you copied the example line verbatim instead of adapting it to your system:
## Example row ##
GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap rd.lvm.lv=fedora/root rhgb quiet rd.driver.blacklist=nouveau"
You should only append rd.driver.blacklist=nouveau to end of the existing GRUB_CMDLINE_LINUX=”…” line.

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RedHat 8.4 Kickstart Error - iscsid: Warning: Initiatorname file

I am testing a known working Redhat Kickstart procedure on upgraded Vmware software.
Our KS process uses two CDRom's. the RH ISO is attached to CD 1 and KS ISO attached to CD 2.
the KS process fails with many messages such as
localhost dracut-initqueue[1118]: Warning: dracut-initqueue timeout - starting timeout scripts
In addition the following message appears in the rdsosreport file:

Stop SE Linux from Enforcing on Android AOSP

I need to stop SE Linux from enforcing, from the earliest possible time in the Android boot sequence.
I had read that a kernel parameter of "selinux=0" would stop this. It doesn't:
smarc_mx8mq:/ # cat /proc/cmdline
selinux=0 console=ttymxc2,115200 earlycon=imxuart,0x30880000,115200 init=/init video=HDMI-A-1:1080x1920-32#60 androidboot.console=ttymxc0 androidboot.hardware=freescale androidboot.fbTileSupport=enable cma=1280M androidboot.primary_display=imx-drm firmware_class.path=/vendor/firmware transparent_hugepage=never loop.max_part=7 buildvariant=eng ...
smarc_mx8mq:/ # getenforce
Enforcing
What can I do to absolutely stop SE Linux from enforcing from the start of the boot sequence? (I can have root shell access and I can change the kernel config or any other part of the AOSP build.)
What can I do to absolutely stop SE Linux from enforcing from the start of the boot sequence? (I can have root shell access and I can change the kernel config or any other part of the AOSP build.)
I turn off selinux in BoardConfig.mk by setting:
BOARD_KERNEL_CMDLINE += androidboot.selinux=permissive
Then after building and target flashingcat /proc/cmdline shows androidboot.selinux=permissive:
hikey960:/ # cat /proc/cmdline
androidboot.hardware=hikey960 firmware_class.path=/vendor/firmware loglevel=15 efi=noruntime
overlay_mgr.overlay_dt_entry=hardware_cfg_enable_android_fstab androidboot.selinux=permissive
The solution is to use androidboot.selinux=permissive instead of selinux=0.
I've read that androidboot.selinux=disabled will work too.

How to debug the problem not able to translate OID with a new MIB file for UPS-MIB?

On Centos, I ran into the following error:
sudo snmptrap -v 2c -c read localhost '' UPS-MIB::upsTraps
MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs
Cannot find module (UPS-MIB): At line 0 in (none)
UPS-MIB::upsTraps: Unknown Object Identifier
The above error happened after
Copied UPS-MIB.txt to /usr/share/snmp/mibs
I started snmptrapd:
snmptrapd -f -Lo -Dread-config -m ALL
The version of the Net-SNMP is 5.2.x.
The same procedures work fine with Ubuntu 18.04/Net-SNMP 5.3.7.
I wonder how to debug and fix the problem?
Besides the Net-SNMP version difference, on Ubuntu, I found an instruction to install mib-download-tool, and execute it after the installation of Net-SNMP, and comment out the lines beginning with min: in snmp.conf in order to fix the error of missing MIB's.
However, for the Centos, I had no need and found no such instruction, thus I have not done it yet, as there is no error message of missing MIB's.
The MIB file is downloaded from https://tools.ietf.org/rfc/rfc1628.txt
renamed to UPS-MIB.txt (It seems to me that the name of the MIB file does not matter, as long as it's unique? I tried to use a different names, upsMIB.txt, rfc1628.txt, but it does not help to improve.)
I solved the problem as follows:
manually copied /usr/share/snmp/mibs/ietf/UPS-MIB on an Ubuntu with Net-SNMP 5.7.3 installed to the Centos /usr/share/snmp/mibs/UPS-MIB
then restart the snmpd
by the command:
service snmpd restart
then the OID of UPS-MIB becomes visible and accessible.
Maybe, the version that I downloaded from https://tools.ietf.org/rfc/rfc1628.txt is not suitable??

Failed to start Neo4j service

I am using neo4j enterprise 3.0.3 version for windows. Following the operations manual 3.0, I have installed the neo4j service with bin\neo4j install-service. But I can't start it with bin\neo4j start. It said
Invoke-Neo4j : Failed to start service 'Neo4j Graph Database - neo4j (neo4j)'.
And I can't start the neo4j service in windows serice either. Maybe anyone have encountered this case before?
I had the same problem: I am using neo4j community 3.1.2 for windows and installed the service with the neo4j.bat file without any problems.Then i wanted to start the service with neo4j.bat and got the same error as you
I found a solution that worked for me. My neo4j files were in a folder, where the path to the folder contained spaces (C:\Program Files\Neo4j) Then i moved the folder one level up (C:\Neo4j).
After that i could start the service without problems.
Maybe this solution helps.
I am running neo4j on windows and in my case the crux of the issue was that there was an incompatibility between the installed versions of Java (32-bit) v/s OS version. The biggest clue that led me to this is the following set of lines in neo4j-service.2018-08-03 log file
[2018-08-03 14:55:42] [info] [ 1432] Starting service...
[2018-08-03 14:55:42] [error] [ 1432] %1 is not a valid Win32 application.
[2018-08-03 14:55:42] [error] [ 1432] Failed creating java C:\JavaNew\bin\server\jvm.dll
[2018-08-03 14:55:42] [error] [ 1432] %1 is not a valid Win32 application.
[2018-08-03 14:55:42] [error] [ 1432] ServiceStart returned 1
There are a fair number of potential issues, and I have made an attempt to compile all the issues with this,
Windows services cannot deal with service names in folders that have spaces; especially if there is another folder with the same name as the one with spaces.
For example - C:\Program Files... will have issues if C:\Program\Something...
To work around this, I put Neo4j in root folder c:\Neo4j
Get-Java.ps1 (under ..\bin\Neo4j-Management folder)looks in the path variable for 'JAVA_HOME' (usually found in *nix environments). If it does not find it here, it keeps looking in registry, and finally throws up its hand!
To deal with this, I simply put in a path variable. For a good measure, I uninstalled Java and re-installed Java in the root folder under C:\JavaNew
In retrospect, this step is probably not on part of the problem, and hence can be ignored. But I am leaving it here for completeness sake.
Invoke-Neo4j.ps1 (also under ..\bin\Neo4j-Management folder) has code that determines if the OS is 32-bit (or 64-bit). Based on this it determines if it should run prunsrv-i386.exe (32-bit) or prunsrv-amd64.exe (64-bit).
This has to match the Java version installed.
Upon running java -XshowSettings:all, and inspecting the sun.arch.data.model value (32, in my case), I realized that my OS is 64 bit and the Java version is 32-bit.
To deal with this, I put in code (very klugey!). I am sure there are much better ways to get to the same outcome, but this is what I used.
switch ( (Get-WMIObject -Class Win32_Processor | Select-Object -First 1).Addresswidth ) {
32 { $PrunSrvName = 'prunsrv-i386.exe' } # 4 Bytes = 32bit
#64 { $PrunSrvName = 'prunsrv-amd64.exe' } # 8 Bytes = 64bit COMMENTED as a workaround!!!
64 { $PrunSrvName = 'prunsrv-i386.exe' } # 8 Bytes = 64bit
Now, uninstall the neo4j service, install it, and start the service.
Hope this works for you.
neo4j console
Posting for latest versions > 4.x
I had the same issue using neo4j start, Neo4j console is the right command I was looking for. It is a web-based graph that acts as an interactive tutorial.
i had the same problem , after the neo4j worked for few weeks it stoop working (without any change that i made)
i have set java_home uninstall and install and now it works
neo4j-enterprise-3.3.4
I was also having weired issue as there was no error but neo4J service did not start.
[xx#ss1 bin]$ ./neo4j console
[xx#ss1 bin]$ .
The problem was with the permission on Java directory and I tried
chmod -R 777 jdk_directory
and problem got solved.
#neo4j #neo4jnotstarting

NV-GLX missing extension in OS X Lion

I connect to a remote linux machine using "ssh -X machine", and then I run a graphical application, so its window is displayed on my local OS X Lion machine using X Window. I get the error
"Xlib: extension "NV-GLX" missing on display "localhost:11.0"."
The application moves very slow. Is it any way to use NV-GLX on OS X or to cimcurvent this problem?
I've encountered similar problem trying to connect from a laptop with AMD graphical card to a linux server with NVIDIA card and drivers installed.
If you have root access to your remote linux machine you could try to restart X server with default libglx.so, not the one from NVIDIA driver package. Appears that NVIDIA installer doesn't support partial installation (only driver, no GLX lib), so one needs to remove NVIDIA libglx.so from xorg modules path, but leave nvidia_drv.so. On Debian you could do
# update-alternatives --config glx # select mesa-diverted
# ln -s /usr/lib/nvidia/current/nvidia_drv.so /usr/lib/xorg/modules/drivers/
Be shure your remote /etc/Xorg.0.log has following parts
...
[ 1111.390] (II) LoadModule: "glx"
[ 1111.390] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 1111.390] (II) Module glx: vendor="X.Org Foundation"
...
[ 1111.391] (II) LoadModule: "nvidia"
[ 1111.391] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
[ 1111.392] (II) Module nvidia: vendor="NVIDIA Corporation"
...
After that Xlib: extension "NV-GLX" missing on display "localhost:11.0" message should go away