Created attachment 1107216 [details]
mostly just the above report in a more readable format

Description of problem:

-kernel 4.2.x nouveau driver with Nvidia GF660 and widescreen flat panel LG 34UM67 will only display 1920x1080

-the native rez for the panel is 2560x1080 but xrandr doesn't show it as available

-the monitor-get-edid utility produces an edid bin that has the correct modeline:

---

Name: LG ULTRAWIDE
EISA ID: GSM59f1
EDID version: 1.3
EDID extension blocks: 1
Screen size: 80.0 cm x 34.0 cm (34.22 inches, aspect ratio 2.39)
Gamma: 2.2
Digital signal
Max video bandwidth: 240 MHz

        HorizSync 30-90
        VertRefresh 56-75

        # Monitor preferred modeline (60.0 Hz vsync, 66.7 kHz hsync, ratio 2.37, 81 dpi)
        ModeLine "2560x1080" 185.58 2560 2624 2688 2784 1080 1083 1093 1111 -hsync -vsync

---

but that edid bin will not load with the KMS kernel parameter and the make process to create a custom edid for the native rez fails with:

---

hobbes:~/video/Documentation-433/EDID$ make
edid.S: Assembler messages:
edid.S:171: Warning: value 0x121 truncated to 0x21
edid.S:175: Error: invalid operands (*UND* and *ABS* sections) for `<<'
Makefile:16: recipe for target '2560x1080.o' failed
make: *** [2560x1080.o] Error 1
rm 1600x1200.o
Press any key to continue...

---


Line 175 in the edid.S file seems to indicate that it is failing on the XY ratio line of 21:9

the homemade 2560x1080.S src is below:


/* EDID */
#define VERSION 1
#define REVISION 3

/* Display */
#define CLOCK 185580 /* kHz */
#define XPIX 2560
#define YPIX 1080
#define XY_RATIO XY_RATIO_21_9
#define XBLANK 224
#define YBLANK 31
#define XOFFSET 64
#define XPULSE 128
#define YOFFSET (63+3)
#define YPULSE (63+13)
#define DPI 81
#define VFREQ 60 /* Hz */
#define TIMING_NAME "Linux LG"
/*#define ESTABLISHED_TIMING2_BITS 0x08 /* Bit 3 -> 1024x768 @60 Hz */
#define HSYNC_POL 0
#define VSYNC_POL 1
#define CRC 0x55

#include "edid.S"

---

also tried the nvidia driver with the 'CustomEDID' parameter without success

the nvidia-settings utility shows the preferred monitor rez but ignores the edid.bin it generates and still only works at 1920x1080




Version-Release number of selected component (if applicable):

-tried the make from the 4.2x and the 4.3x kernel src 
-with the edid binary from both the get-edid utility and the nvidia utility
-the kernel src is unchanged
-there was no diff in the parse of the edid bin files


How reproducible:


Steps to Reproduce:
1. run make on the included src
2.
3.

Actual results:

same fail

Expected results:
...was kind of hoping that a custom edid would make the nouveau driver yield the proper rez

Additional info:

thanks and any help appreciated

rikm