Bug#975986: linux-image-4.19.0-12-amd64: Computer with integrated Intel graphics card consumes a lot of CPU

[José Domingo Muñoz <josedom24@josedomingo.org>]

Package: src:linux
Version: 4.19.152-1
Severity: normal

Dear Maintainer,

* What led to the situation?

When installing the new kernel linux-image-4.19.0-12-amd64, on Debian Buster
with an intel integrated graphics card, I start to have CPU consumption
problems. Specifically, I see three problems:
* When watching videos in the web browser, the CPU consumption is 70 - 80%.
* When I record videos with Obs Studio the CPU consumption is 90-100%.
* OBS Studio does not allow me to capture the terminal.

* What exactly did (or did not do) that was effective (or
     ineffective)?

If I boot the system with the kernel linux-image-4.19.0-11-amd64 the problems
disappear.

Thank you



-- Package-specific info:
** Kernel log: boot messages should be attached


-- System Information:
Debian Release: 10.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.8.0-0.bpo.2-amd64 (SMP w/12 CPU cores)
Kernel taint flags: TAINT_USER
Locale: LANG=es_ES.UTF-8, LC_CTYPE=es_ES.UTF-8 (charmap=UTF-8), LANGUAGE=es_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-4.19.0-12-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.133+deb10u1
ii  kmod                                    26-1
ii  linux-base                              4.6

Versions of packages linux-image-4.19.0-12-amd64 recommends:
ii  apparmor             2.13.2-10
ii  firmware-linux-free  3.4

Versions of packages linux-image-4.19.0-12-amd64 suggests:
pn  debian-kernel-handbook  <none>
ii  grub-efi-amd64          2.02+dfsg1-20+deb10u2
pn  linux-doc-4.19          <none>

Versions of packages linux-image-4.19.0-12-amd64 is related to:
pn  firmware-amd-graphics     <none>
pn  firmware-atheros          <none>
pn  firmware-bnx2             <none>
pn  firmware-bnx2x            <none>
pn  firmware-brcm80211        <none>
pn  firmware-cavium           <none>
pn  firmware-intel-sound      <none>
pn  firmware-intelwimax       <none>
pn  firmware-ipw2x00          <none>
pn  firmware-ivtv             <none>
pn  firmware-iwlwifi          <none>
pn  firmware-libertas         <none>
pn  firmware-linux-nonfree    <none>
pn  firmware-misc-nonfree     <none>
pn  firmware-myricom          <none>
pn  firmware-netxen           <none>
pn  firmware-qlogic           <none>
pn  firmware-realtek          <none>
pn  firmware-samsung          <none>
pn  firmware-siano            <none>
pn  firmware-ti-connectivity  <none>
pn  xen-hypervisor            <none>

-- no debconf information