Missing firmwares for module i915

While upgrading your Debian Stretch, you can come up with this message :

W: Possible missing firmware /lib/firmware/i915/kbl_huc_ver02_00_1810.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_huc_ver01_07_1398.bin for module i915
W: Possible missing firmware /lib/firmware/i915/skl_huc_ver01_07_1398.bin for module i915

This has been referenced as a bug :

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864601

If you can’t upgrade to Debian Buster, there is a possible workaround

Otherwise, after switching to Buster, the available version of firmware-misc-nonfree provides the missing firmwares.

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WARNING : Failed to connect to lvmetad. Falling back to device scanning

At boot time, the following message can pop up :

WARNING : Failed to connect to lvmetad. Falling back to device scanning

This message is displayed, whether running Debian stable or Debian testing.

To get rid of this message, disable lvmetad in /etc/lvm/lvm.conf


use_lvmetad=0

Update the initramfs for the current kernel your system uses :

update-initramfs -k $(uname -r) -u; sync

Reboot your system and you’re done !

Ubuntu workaround for this issue

This issue has already been reported in the Debian bug tracking system : #846946

yum-security

yum-security is a plugin to the Red Hat Entreprise Linux package manager yum. It helps installing only security updates (RHSA) (as opposed to bug fixes (RHBA) or enhancements (RHEA)).
Explanation of RHSA, RHBA and RHEA advisories

RHEL 7 : yum-security is part of yum

RHEL 6 : yum install yum-plugin-security

    List all available erratas without installing them :

    yum updateinfo list available

    List all available security updates without installing them :

    yum updateinfo list security all
    yum updateinfo list sec

    List of the currently installed security updates :

    yum updateinfo list security installed

More examples are available in this Red Hat KB article

Red Hat Security Data API

Red Hat has been provided security information since January 2005 through different ways :
RHSA-Announce mailing list, Red Hat CVE database and Red Hat Product Errata

For a better access of their data, the Red Hat Product Security has just released a beta API. It provides more search options for accessing real-time data.

More details can be found in the post below :
Red Hat Security Blog post about their new Security Data API service
RedHat Security Data API

Getting more details about Red Hat Security Advisories and related CVEs

Two links for an in-depth explanation regarding Red Hat backporting security fixes process as well as compatibility between Red Hat security advisories and Mitre CVEs.

Backporting Security Fixes

Red Hat and CVE compatibility

Red Hat provides free access to two databases for errata and for CVE referenced in Red Hat products :

Red Hat Product Errata database

Red Hat CVE Database