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Bug#977642: 5.10 kernel needs disable_fw_kms_setup=1

From Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Newsgroups linux.debian.bugs.dist
Subject Bug#977642: 5.10 kernel needs disable_fw_kms_setup=1
Date 2020-12-18 02:30 +0100
Message-ID <BncKJ-1HT-1@gated-at.bofh.it> (permalink)
References <BmQKe-528-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Package: raspi-firmware
Version: 1.20201022-1
Severity: normal
X-Debbugs-CC: lucas@debian.org

Dear Debian raspi-firmware maintainers,

Linux 5.10 kernel's vc4.ko starts partial support of RPi 2/3/4 VideoCore 4 GPU,
and it enables 4K HDMI output, which is very welcome.

But in some situation, screen output is garbled as reported at
http://lists.infradead.org/pipermail/linux-rpi-kernel/2020-November/007894.html

The above symptom can be fixed by adding disable_fw_kms_setup=1 as
reported at
http://lists.infradead.org/pipermail/linux-rpi-kernel/2020-November/007900.html

I do not think this is a bug in raspi-firmware, but config.txt is handled by
raspi-firmware, please consider to add disable_fw_kms_setup=1.

Best regards, Ryutaroh Matsumoto

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Bug#977575: raspberry pi touch screen support Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-17 03:00 +0100
  Bug#977642: 5.10 kernel needs disable_fw_kms_setup=1 Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp> - 2020-12-18 02:30 +0100

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