Want to install VirtualBox Guest Additions on CentOS 7 but get a header mismatch
I try to install VirtualBox Guest Additions on a CentOS 7 VM.I installed the prerequisites viasudo yum install perl gcc dkms kernel-devel kernel-headers make bzip2then I "inserted" the Guest Additions...
View ArticleHow to fix an apparenlty missing kernel module dependency specification?
I've encountered a relatively common problem with ASIX AX88179 USB 3.0 Gigabit Ethernet adapter, where it was not working at all, or was working sporadically, and dmesg was showing errors...
View ArticleReconnecting USB device quickly crashes the system
I am trying to reconnect several USB devices (ZTE MF823 modems) on the debian server and sometimes it makes the system crash , this is the output of dmesg -HwP.s It is using USB2Any related information...
View ArticleUsing Debian Stretch to build 5.15.x kernel with zstd compression fails with...
I had to move from Jessie to Stretch as kernel 5.15.49 requires gcc 5.x version (Jessie had 4.9 version Stretch 6.x). I decided to try the ZSTD module compression option in 5.15.x. I ensured to apt-get...
View ArticleHow to fix an apparenlty missing kernel module dependency declaration?
I've encountered a relatively common problem with ASIX AX88179 USB 3.0 Gigabit Ethernet adapter, where it was not working at all, or was working sporadically, and dmesg was showing errors...
View ArticleHow to find the kernel boot parameter for a given boot configuration option?
I have a Dell laptop running Debian Sid. Current kernel (4.15.4) is configured to load dell_smbios as module (CONFIG_DELL_SMBIOS=m). This produces the followning error while bootingdell_smbios: No...
View ArticleDifference between C-state and S-state?
I was going through the Linux power management files, and I am confused about the C and S states.The C-states are defined in /sys/devices/system/cpux/cpuidle/. From what I understand they are used to...
View ArticleWhat data does /sys/module/notes hold?
I want to know what type of data the notes subdir holds in a specific /sys/module entry, however the man 5 sysfs of /sys/module is not fully documented yet. There must be some documentation around it...
View ArticleHow to configure buildroot to add a sound device?
I've used a given board configuration to reconfigure it for my individual board. My board has a CS4270 sound device of Cirrus Logic. My uImage is booting successfully on my target hardware, but an...
View ArticleCompiling kernel with specified parameter
You can easily change kernel parameters with sysctl and then make it persistent with /etc/sysctl.d but is there a fast way to change default kernel parameters like default vm.swappiness = 60 at the...
View ArticleNeed help uninstalling driver
I have fedora.I installed incompatible drivers: "sudo dnf install broadcom-wl" and restarted linux. Now i am stuck in emergency mode with shellI tried removing driver module, but for some reason, lsmod...
View ArticleUninstallingh broadcom-wl driver: Now stuck in emergency mode
I have fedora.I installed incompatible drivers: "sudo dnf install broadcom-wl" and restarted linux. Now i am stuck in emergency mode with shellI tried removing driver module, but for some reason, lsmod...
View ArticleDisable bridge module insert?
I have Fedora 20 setup with default kernel configuration, where bridge feature is enabled as a module (CONFIG_BRIDGE=m), and the bridge module loads as the system starts. I don't understand who...
View ArticleUninstalling broadcom-wl driver: Now stuck in emergency mode
I have fedora.I installed incompatible drivers: "sudo dnf install broadcom-wl" and restarted linux. Now i am stuck in emergency mode with shellI tried removing driver module, but for some reason, lsmod...
View Articlemegaraid_sas Kernel Module changes in between
I am using an LSI MegaRAID SAS 8708EM2 Raid Controller and am having trouble getting it to work with Debian 10 and Debian 11.On Debian 9 (Linux Kernel 4.10.9) it still works perfectly but as soon as I...
View ArticleHow to list all loadable kernel modules?
I'm looking for a few kernel modules to load i2c-dev and i2c-bcm2708. But the modprobe command returns:sudo modprobe i2c-devmodprobe: module i2c-dev not found in modules.depHow do I list all the...
View ArticleHow can my PCI device driver remap PCI memory to userspace?
I am trying to implement a PCI device driver for a virtual PCI device on QEMU. The device defines a BAR region as RAM, and the driver can do ioremap() this region and access it without any issues. The...
View Articlehow to account for and remove compiled module size discrepancy
I purchased an embedded (arm-based) Linux SBC and the manufacturer included an SD card with Ubuntu prebuilt.I'm trying to recompile the kernel and modules to reproduce what the manufacturer shipped....
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Your kernel headers for kernel 2.6.32-504.e16.x86_64 cannot be found
I have centos 6.6 installed on virtualbox. In order to use features like copy/paste, being able to share folders, etc, I need to install Guest additions on it. I've clicked Device -> Insert Guest...
View ArticleAfter installing the drivers I Try to load the Wl module but I have this...
#modeprobe wlmodeprobe: FATAL: Module wl not found in directory /lib/modules/5.10.0-15-amd64
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