Bug detailed description:
-------------------------
On extended mode, when width exceed 2048, error message is reported:
(EE) intel(0): Failed to allocate framebuffer.
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 148 (RANDR)
Minor opcode of failed request: 7 (RRSetScreenSize)
Serial number of failed request: 28
Current serial number in output stream: 29
Created an attachment (id=36239)
xorg log
System Environment: ------- ------- ----- 7_6_1_rc1- 5913-g1f756d916 a48393ce4ff7c28 4193e48a510c175 b 1.8-branch) xorg-server- 1.8.1 2.11.0- 169-g5a0a8a1cf6 d9b0616d6a097e7 83f2aa318b45736 e40152ee1e1c7a6 3f4777791863215 e3faa37a86
-------
Arch: i386
Platform: pineview
Libdrm: (master)2.4.21
Mesa: (7.8)mesa_
Xserver: (server-
Xf86_video_intel: (master)
Kernel: (master)
Bug detailed description: ------- ------- ----
-------
On extended mode, when width exceed 2048, error message is reported:
(EE) intel(0): Failed to allocate framebuffer.
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 148 (RANDR)
Minor opcode of failed request: 7 (RRSetScreenSize)
Serial number of failed request: 28
Current serial number in output stream: 29
Reproduce steps:
----------------
1. xrandr --output LVDS1 --mode 1024x600
2. xrandr --output VGA1 --mode 1280x1024
3. xrandr --output LVDS1 --left-of VGA1