Since setting the grub setting to GRUB_CMDLINE_LINUX_DEFAULT="nomodeset" to fix 
the problem I experimented with the nouveau parameters and found another 
workaround which is a better solution as it still leaves the original video 
drivers loaded (where as the setting nomodeset replaces the original video 
drivers with the standard VGA driver).
Setting the grub setting to GRUB_CMDLINE_LINUX_DEFAULT="nouveau.NvMXMDCB=0" 
fixes the freezing.
This does not fix the 2 messages that are repeated regularly but avoids the 
freezing.
The 2 messages that are a problem are:
nouveau 0000:01:00.0: gr: 00100000 [] ch 3 [001fa70000 gnome-shell[1509]] subc 
3 class 8597 mthd 1304 data 1d1c1b1a
nouveau 0000:01:00.0: gr: DATA_ERROR 00000012 [RT_LINEAR_WITH_ZETA]

________________________________
From: Flavio Bagnato <flaviobagn...@gmail.com>
Sent: 12 June 2024 16:51
To: nouveau@lists.freedesktop.org <nouveau@lists.freedesktop.org>
Subject: nouveau freezing desktop - Ubuntu 24.04 - NVIDIA GeForce GT 330M

Hello,

I recently installed Ubuntu 24.04 on a MacBook Pro (Mid-2010) running a NVIDIA 
GeForce GT 330M adapter.

Unfortunately the computer is constantly freezing.

If I pass "nomodeset" to grub, the nouveau driver is not used and the computer 
does not freeze so it seems to be related to the nouveau driver.

I am wanting to know if there are any parameters I can pass to nouveau to 
resolve the freezing.

I have tried temporarily replacing nomodeset with nouveau.noaccel=1 then with 
nouveau.nofbaccel=1 but both caused the booting to freeze.

I have also tried temporarily replacing nomodeset with nouveau.modeset=0 to 
disable nouveau but got a blank screen whilst booting (I've seen this blank 
screen reported by others on the web).

I should be reporting a bug I assume but when the computer freezes I have to 
turn the computer off and therefore dmesg is not an option to provide logs.

I have noticed in dmesg however 2 messages that read:

nouveau 0000:01:00.0: gr: 00100000 [] ch 3 [001fa70000 gnome-shell[1509]] subc 
3 class 8597 mthd 1304 data 1d1c1b1a

followed by......

nouveau 0000:01:00.0: gr: DATA_ERROR 00000012 [RT_LINEAR_WITH_ZETA]

These 2 messages are repeated regularly.

Is there anything I can do (like pass any parameters) that may resolve the 
computer freezing?

Regards,

Flavio

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