https://bugs.freedesktop.org/show_bug.cgi?id=39988
Summary: [NVA5] Created FIFOs do not work
Product: xorg
Version: git
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/nouveau
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Created an attachment (id=50104)
--> (https://bugs.freedesktop.org/attachment.cgi?id=50104)
kernel log with drm.debug=15
I must currently use 'noaccel=1' to use nouveau on my NVA5 (GT 220, 1GB vram).
While debugging, it appeared the extra created FIFOs simply do not run at all,
and trigger PFIFO_DMA_PUSHER errors, with IB_EMPTY status. The first of these
errors happen in nouveau_dma_init() function, which is the first one to be run
after creation of a new FIFO.
I must add 'vram_pushbuf=1' to kernel parameters to not have these errors at
start, however, adding 'vram_notify=1' appears to have not effect.
X crashes at start if I do not use 'noaccel=1', with or without
'vram_pushbuf=1', triggering PFIFO_DMA_PUSHER errors, with INVALID_CMD status.
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