[Nouveau] [Bug 59069] nouveau E[ DRM] fail ttm_validate

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59069

--- Comment #20 from Kees Bakker <kees.bakker at xs4all.nl> ---
Created attachment 73179
  --> https://bugs.freedesktop.org/attachment.cgi?id=73179&action=edit
dmesg with loggingv2 patch applied

Here is the dmesg from another system, with the same (G73, NV40) video adapter,
with two smaller monitors (1240x1024).

Notice that there are a lot of CACHE ERROR message. So many that the printk
buffer overflowed.

[70448.465702] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 3 mthd 0x0184 data 0xbeef0201
[70448.465725] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 3 mthd 0x0188 data 0xbeef0201
[70448.465745] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 3 mthd 0x0300 data 0x0000000b
...
[70448.475032] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 7 mthd 0x1dac data 0x00000000
[70448.475053] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 7 mthd 0x1dac data 0x00000000
[70448.475072] nouveau E[   PFIFO][0000:01:00.0] CACHE_ERROR - ch 4
[unity_support_t[30391]] subc 7 mthd 0x1dac data 0x00000000


BTW The user of this system is not doing much with it, so the logging is
preliminary. I'm waiting for more details to show up. In the mean time, this is
what we get after the first login.

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