[Nouveau] [Bug 91025] New: nouveau fails to run with NV5 [Riva TNT2 / TNT2 Pro]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91025

            Bug ID: 91025
           Summary: nouveau fails to run with NV5 [Riva TNT2 / TNT2 Pro]
           Product: xorg
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: anonymissimus at arcor.de
        QA Contact: xorg-team at lists.x.org

Created attachment 116588
  --> https://bugs.freedesktop.org/attachment.cgi?id=116588&action=edit
dmesg > kernel_log.txt

sudo lspci -vnn:

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation NV5 [Riva TNT2 /
TNT2 Pro] [10de:0028] (rev 11) (prog-if 00 [VGA controller])
    Subsystem: Elsa AG Erazor III [1048:0c28]
    Flags: 66MHz, medium devsel, IRQ 11
    Memory at f4000000 (32-bit, non-prefetchable) [size=16M]
    Memory at f6000000 (32-bit, prefetchable) [size=32M]
    Expansion ROM at f5ff0000 [disabled] [size=64K]
    Capabilities: [60] Power Management version 1
    Capabilities: [44] AGP version 2.0

AFAICT there should be a "kernel driver in use: nouveau" line here, but I
didn't overlook/forget to copy it. That's probably why xrandr doesn't let me
set anything better than 1024x768.

log according to http://nouveau.freedesktop.org/wiki/Bugs/ attached, notice the
nouveau error messages at ~12.xx.

The only way of dumping the video bios that worked for me was dd according to
http://nouveau.freedesktop.org/wiki/DumpingVideoBios/.
vbtracetool didn't work due to not finding pci.h even after installing
linux-headers while compiling.

OS/packages:
No clue about needed stuff here or how to find out versions. OS is fresh
debian-8.1.0-i386-lxde-CD1.iso. All packages up to date according to synaptic
and the normal update repos of this distro (current stable, stretch) as of
19.06.2015.

uname -r:
3.16.0-4-686-pae

Passing nouveau.agpmode=0 (or 1 or 2) in grub didn't help. (I think I did this
correctly, as it seems I was correct with log_buf_len=1M too.)

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