[NV11] Hang during suspend/resume on Geforce 2 MX200 & MX400
Submitted by Michal Welnicki
Assigned to Nouveau Project
Description
Created attachment 90680
Serial console dump from MX200 card (boot + crash)
Hibernation and suspend/resume always hangs on a GeForce2 MX200/MX400 (NV11) with nouveau loaded.
Steps to reproduce:
- boot a kernel, load nouveau
- echo "disk" > /sys/power/state
- machine hangs after suspending devices but before the image writing begins
- after several seconds, the monitor complains about "input signal out of range"
Same thing happens with "echo freeze > /sys/power/state".
If nouveau is unloaded before hibernation, everything works fine.
This happens on two different systems with a GeForce2 MX200/400:
1) Athlon XP 1700+ on an Asrock K7VT2,
GeForce2 MX400 64MB AGP, with VGA output
2) Pentium II 400 on a 440BX-based Gigabyte GA-BX2000+,
GeForce2 MX200 32MB AGP, with VGA and TV-out (S-Video + Cinch)
I'm using CentOS 6 userspace, and various kernels:
linux-2.6.32-358.18.1.el6
linux-3.0.x
linux-3.10.x
linux-3.12.1
linux-3.12.4
Using a serial console I was able to narrow down the hang to run_tmds_table(), called from nv04_dfp_restore().
Dmesg output and VBIOS of both cards is attached.
Note that neither of my cards has DVI/HDMI.
It seems that the flat panel connector is wrongly fabricated in nouveau_bios.c:fabricate_dcb_encoder_table().
Commenting out the call to fabricate_dcb_output(dcb, DCB_OUTPUT_TMDS, ...) makes hibernation work fine (patch attached).
The current condition of checking bios->tmds.output{0,1}_script_ptr seems wrong. But since I don't have any NV11 with DVI output, I'm not sure what to key creating the TMDS output on.
**Attachment 90680**, "Serial console dump from MX200 card (boot + crash)":
mx200-boot-and-crash.txt