Where do I report bugs in the Z83-4U Ubuntu implementation?

#3
Okey dokey.

(1) on the Baytrail chipset you need the following to stop occasional hard lockups when playing media, particularly in full-screen mode: in /etc/default/grub, set

Code:
 GRUB_CMDLINE_LINUX="intel_idle.max_cstate=1"
then run `update-grub` and reboot.

(2) This may be an upstream job but /bin/pavolume{down,up} have the audio sink hard-coded to 0, which on the Z83-4U is often wrong. I wrote this script, which takes a `+` or `-` as argument, and called it `pavolumeset.sh`:

Code:
#!/bin/sh
operator="$1"
parts=$(pacmd list-sinks | perl -slne '
    if (/^\s*\*\s*index: *(\d+)$/) {
        $cur_sink = $1;
    } elsif (/^\s+volume:.*? (\d+)% / && $cur_sink ne "") {
        print $cur_sink . " " . $1;
    }
' -- -cur_sink="")
sink=$(echo $parts | tr ' ' '\012' | head -1)
volume0=$(echo $parts | tr ' ' '\012' | head -2 | tail -1)
volume=$((volume0 $operator 10))
volume=$((volume < 0 ? 0 : volume))
volume=$((volume > 100 ? 100 : volume))
pactl set-sink-volume "$sink" "$volume%"
 
#7
So now that I have reported these bugs, have they been entered into Minix' bug tracker?
We're not providing fixes to old Ubuntu images.
You can provide feedback about our Ubuntu 20.04 LTS image, which we'll take into account when building our next image.
 
#8
Okey dokey.

(1) on the Baytrail chipset you need the following to stop occasional hard lockups when playing media, particularly in full-screen mode: in /etc/default/grub, set

Code:
 GRUB_CMDLINE_LINUX="intel_idle.max_cstate=1"
then run `update-grub` and reboot.

(2) This may be an upstream job but there is no script to change the Pulseaudio volume setting. I wrote this script, which takes a `+` or `-` as argument, and called it `pavolumeset.sh`:

Code:
#!/bin/sh
operator="$1"
parts=$(pacmd list-sinks | perl -slne '
    if (/^\s*\*\s*index: *(\d+)$/) {
        $cur_sink = $1;
    } elsif (/^\s+volume:.*? (\d+)% / && $cur_sink ne "") {
        print $cur_sink . " " . $1;
    }
' -- -cur_sink="")
sink=$(echo $parts | tr ' ' '\012' | head -1)
volume0=$(echo $parts | tr ' ' '\012' | head -2 | tail -1)
volume=$((volume0 $operator 10))
volume=$((volume < 0 ? 0 : volume))
volume=$((volume > 100 ? 100 : volume))
pactl set-sink-volume "$sink" "$volume%"
(3) For trouble-free intensive graphics operation, we have found it necessary to have the following in /etc/modprobe.d/i915.conf:
Code:
options i915 enable_fbc=1 enable_guc=-1 enable_dc=0
Link to further information.
 
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