Nouveau - May 2023 - Fwd: absent both plymouth, and video= on linu lines, vtty[1-6] framebuffers produce vast raster right and bottom borders on the larger resolution of two displays

On 5/25/23 17:52, Bagas Sanjaya wrote:
> Hi,
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
>> Original Summary:
>> absent both plymouth, and video= on linu lines, vtty[1-6] framebuffers
produce vast raster right and bottom borders on the larger resolution of two
displays
>>
>> To reproduce:
>> 1-connect two unequal native resolution displays to a Tesla or Firmi
GPU
>> 2-don't have plymouth in use (I don't ever have it installed,
so don't know whether it impacts)
>> 3-don't include e.g. video=1440x900 at 60 directive on Grub's
linu lines
>> 4-boot Tumbleweed or Fedora 38
>> 5-switch to a vtty, e.g. Ctrl-Alt-F3
>>
>> Actual behavior:
>> 1-Both displays utilize the resolution (same pixel grid) of the lower
resolution display
>> 2-Lower resolution display behaves as expected (light text on black
background)
>> 3-Higher resolution display uses same pixels as lower resolution
display, with light text on black background, leaving right side and bottom
raster instead of black
>>
>> Expected behavior:
>> 1-Both displays utilize the resolution (same pixel grid) of the lower
resolution display
>> 2-Lower resolution display behaves as expected
>> 3-Entire higher resolution display's background is black instead of
portions in raster
>>
>> Workaround: add e.g. video=1440x900 at 60 to Grub's linu lines,
which causes both displays to use the same nominal mode on the full display
space.
>>
>> Typical other linu line options:
>> noresume consoleblank=0 net.ifnames=0 ipv6.disable=1 preempt=full
mitigations=none
>>
>> My Tesla has HDMI and DVI outputs, tested with 1920x1200 and 1680x1050
displays.
>> My Fermi has dual DisplayPort, tested with 2560x1440 and 1680x1050
displays.
>> Occurs Tumbleweed with 6.3.2 and 6.2.12 kernel-default, and with 6.2.15
on Fedora 38, and (partially with Tesla, right side only) with 6.2.12 and 6.3.3
on Mageia 9.
>> Does not occur with 6.1.12 kernel-default on NVidia, or with AMD Caicos
(Terascale2) GPU, or with Intel Eaglelake GPU.
>> Tested only on legacy booting (no UEFI support).
>> Others might describe what I call "raster" as multicolored
snow.
> 
> See bugzilla for the full thread and attached dmesg.
> 
> Anyway, I'm adding it to regzbot:
> 
> #regzbot introduced: v6.1.12..v6.2.12
> #regzbot title: vast raster right and bottom borders on larger display (two
displays with inequal resolution) unless forcing resolution with video=
parameter
> 
Oops, I forget to add bugzilla link:

#regzbot introduced: v6.1.12..v6.2.12
https://bugzilla.kernel.org/show_bug.cgi?id=217479
#regzbot from: Felix Miata <mrmazda at earthlink.net>

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

On 25.05.23 12:55, Bagas Sanjaya wrote:
> On 5/25/23 17:52, Bagas Sanjaya wrote:
>>
>> I notice a regression report on Bugzilla [1]. Quoting from it:
>> [...]
>> Anyway, I'm adding it to regzbot:
>>
>> #regzbot introduced: v6.1.12..v6.2.12
>> #regzbot title: vast raster right and bottom borders on larger display
(two displays with inequal resolution) unless forcing resolution with video=
parameter
Bagas, thx again for your efforts, much appreciated. But I guess for drm
drivers that have a line like

B: https://gitlab.freedesktop.org/drm/[...]

in MAINTAINERS (which includes all the popular drm drivers) this just
creates a lot of confusion for everyone, as one issue will likely end up
being discussed in two or three places in parallel (bugzilla,
freedesktop, email). Better tell reporters to move their issue to the
freedesktop drm tracker and close the ticket in bugzilla. And don't get
regzbot involved, as it for now it sadly is unable to monitor the
freedesktop drm tracker (sooner or later I'll fix that, but for now it's
a blind spot :-/).

Pretty sure none of the DRM developers will disagree, but if I'm wrong,
please holler.
> Oops, I forget to add bugzilla link:
> 
> #regzbot introduced: v6.1.12..v6.2.12
https://bugzilla.kernel.org/show_bug.cgi?id=217479
> #regzbot from: Felix Miata <mrmazda at earthlink.net>
Side note: that currently does not work with regzbot. :-/ Whatever, I'll
remove it from the tracking due to above reasons:

#regzbot inconclusive: sadly not tracked for now

Ciao, Thorsten

On 5/25/23 17:55, Bagas Sanjaya wrote:
> On 5/25/23 17:52, Bagas Sanjaya wrote:
>> Hi,
>>
>> I notice a regression report on Bugzilla [1]. Quoting from it:
>>
>>> Original Summary:
>>> absent both plymouth, and video= on linu lines, vtty[1-6]
framebuffers produce vast raster right and bottom borders on the larger
resolution of two displays
>>>
>>> To reproduce:
>>> 1-connect two unequal native resolution displays to a Tesla or
Firmi GPU
>>> 2-don't have plymouth in use (I don't ever have it
installed, so don't know whether it impacts)
>>> 3-don't include e.g. video=1440x900 at 60 directive on
Grub's linu lines
>>> 4-boot Tumbleweed or Fedora 38
>>> 5-switch to a vtty, e.g. Ctrl-Alt-F3
>>>
>>> Actual behavior:
>>> 1-Both displays utilize the resolution (same pixel grid) of the
lower resolution display
>>> 2-Lower resolution display behaves as expected (light text on black
background)
>>> 3-Higher resolution display uses same pixels as lower resolution
display, with light text on black background, leaving right side and bottom
raster instead of black
>>>
>>> Expected behavior:
>>> 1-Both displays utilize the resolution (same pixel grid) of the
lower resolution display
>>> 2-Lower resolution display behaves as expected
>>> 3-Entire higher resolution display's background is black
instead of portions in raster
>>>
>>> Workaround: add e.g. video=1440x900 at 60 to Grub's linu lines,
which causes both displays to use the same nominal mode on the full display
space.
>>>
>>> Typical other linu line options:
>>> noresume consoleblank=0 net.ifnames=0 ipv6.disable=1 preempt=full
mitigations=none
>>>
>>> My Tesla has HDMI and DVI outputs, tested with 1920x1200 and
1680x1050 displays.
>>> My Fermi has dual DisplayPort, tested with 2560x1440 and 1680x1050
displays.
>>> Occurs Tumbleweed with 6.3.2 and 6.2.12 kernel-default, and with
6.2.15 on Fedora 38, and (partially with Tesla, right side only) with 6.2.12 and
6.3.3 on Mageia 9.
>>> Does not occur with 6.1.12 kernel-default on NVidia, or with AMD
Caicos (Terascale2) GPU, or with Intel Eaglelake GPU.
>>> Tested only on legacy booting (no UEFI support).
>>> Others might describe what I call "raster" as
multicolored snow.
>>
>> See bugzilla for the full thread and attached dmesg.
>>
>> Anyway, I'm adding it to regzbot:
>>
>> #regzbot introduced: v6.1.12..v6.2.12
>> #regzbot title: vast raster right and bottom borders on larger display
(two displays with inequal resolution) unless forcing resolution with video=
parameter
>>
> 
> Oops, I forget to add bugzilla link:
> 
> #regzbot introduced: v6.1.12..v6.2.12
https://bugzilla.kernel.org/show_bug.cgi?id=217479
> #regzbot from: Felix Miata <mrmazda at earthlink.net>
> 
Oops, again, I messed up the regzbot entry (reporter field still assigned
to me). Inconclusiving...

#regzbot inconclusive: Wrong reporter assigned (from: doesn't take effect)

Please ignore this thread as I will send a new one with proper regzbot
commands.

Thanks.

-- 
An old man doll... just what I always wanted! - Clara