Radeon driver with FC20 latest kernel update

[poma]

On 20.01.2015 12:52, Andrew R Paterson wrote:
> Hi,
> I am running fedora 20 X86_64
> 
> I have an Intel Processor:
> Intel(R) Core(TM)2 Quad CPU Q6700 @ 2.66GHz.
> 
> I have an AMD radeon based GPU card :
> Advanced Micro Devices, Inc. [AMD/ATI] RV535 [Radeon X1650 PRO] (Secondary)
> (rev 9e)
> 
> I have two monitors :
> ACER Technolgies – on DVI-0 (1920x1080)
> Viewsonic Corporation on DVI-1 (1920x1200)
> 
> They are (were!) driven by the radeon module :
> 
> lsmod :-
> .....
> radeon 1496040 2
> .....
> i2c_algo_bit 13257 1 radeon
> .....
> drm_kms_helper 	89555 1 radeon
> ttm 				80807 1 radeon
> .....
> drm 				296901 5 ttm,drm_kms_helper,radeon
> 
> 
> /var/log/messages shows:
> 
> radeon 0000:01:00.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M 
> used)
> radeon 0000:01:00.0: GTT: 512M 0x0000000020000000 - 0x000000003FFFFFFF
> [drm] Detected VRAM RAM=512M, BAR=256M
> [drm] RAM width 128bits DDR
> 
> X server log shows:
> 
> [ 88.037] (II) Loader magic: 0x80dd00
> [ 88.037] (II) Module ABI versions:
> [ 88.037] X.Org ANSI C Emulation: 0.4
> [ 88.037] X.Org Video Driver: 14.1
> [ 88.037] X.Org XInput driver : 19.2
> [ 88.037] X.Org Server Extension : 7.0
> [ 88.037] (II) xfree86: Adding drm device (/dev/dri/card0)
> [ 88.040] (--) PCI:*(0:1:0:0) 1002:71c1:174b:0840 rev 158, Mem @ 
> 0xd0000000/268435456, 0xfdaf0000/65536, I/O @ 0x0000ae00/256, BIOS @ 
> 0x????????/131072
> [ 88.040] (--) PCI: (0:1:0:1) 1002:71e1:174b:0841 rev 158, Mem @ 
> 0xfdae0000/65536, BIOS @ 0x????????/65536
> ....
> ....
> [ 88.058] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
> [ 88.058] (II) FBDEV: driver for framebuffer: fbdev
> [ 88.058] (II) VESA: driver for VESA chipsets: vesa
> [ 88.058] (++) using VT number 1
> .....
> .....
> [ 88.059] (II) [KMS] Kernel modesetting enabled.
> [ 88.059] (WW) Falling back to old probe method for modesetting
> [ 88.059] (WW) Falling back to old probe method for fbdev
> [ 88.059] (II) Loading sub module "fbdevhw"
> [ 88.059] (II) LoadModule: "fbdevhw"
> [ 88.059] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so
> [ 88.060] (II) Module fbdevhw: vendor="X.Org Foundation"
> [ 88.060] compiled for 1.14.4, module version = 0.0.2
> [ 88.060] ABI class: X.Org Video Driver, version 14.1
> [ 88.060] (WW) Falling back to old probe method for vesa
> [ 88.060] (II) RADEON(0): Creating default Display subsection in Screen 
> section
> "Default Screen Section" for depth/fbbpp 24/32
> [ 88.060] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
> [ 88.060] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp 
> pixmaps)
> [ 88.060] (==) RADEON(0): Default visual is TrueColor
> [ 88.060] (==) RADEON(0): RGB weight 888
> [ 88.060] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
> [ 88.060] (--) RADEON(0): Chipset: "ATI Radeon X1650" (ChipID = 0x71c1)
> .....
> ________________________________________________
> All worked well up to kernel 3.17.7-200.fc20.x86_64.
> ________________________________________________
> 
> The recent update to kernel 3.17.8-200.fc20.x86_64
> results in radeon.ko failing to load.
> 
> /var/log/messages shows:
> 
> [drm:radeon_init] *ERROR* No UMS support in radeon module!
> 
> %modrpobe radeon gives same message.
> 
> My monitors are then in low res mirorred mode (ugh!)
> 
> X server log shows:
> ....
> [ 13345.844] (II) Loader magic: 0x80dd00
> [ 13345.844] (II) Module ABI versions:
> [ 13345.844] X.Org ANSI C Emulation: 0.4
> [ 13345.844] X.Org Video Driver: 14.1
> [ 13345.844] X.Org XInput driver : 19.2
> [ 13345.844] X.Org Server Extension : 7.0
> [ 13345.844] (II) xfree86: Adding drm device (/dev/dri/card0)
> [ 13345.844] setversion 1.4 failed
> [ 13345.848] (--) PCI:*(0:1:0:0) 1002:71c1:174b:0840 rev 158, Mem @ 
> 0xd0000000/268435456, 0xfdaf0000/65536, I/O @ 0x0000ae00/256, BIOS @ 
> 0x????????/131072
> [ 13345.848] (--) PCI: (0:1:0:1) 1002:71e1:174b:0841 rev 158, Mem @ 
> 0xfdae0000/65536, BIOS @ 0x????????/65536
> .......
> 
> I understand UMS is User ModeSetting – which according to a quick browse of 
> the source for the radeon module means CONFIG_DRM_RADEON_UMS is not set.
> Then I came across comments to the effect that this has been deprecated (a 
> mysterious word akin to legal-speak!) presumably replaced by KMS.
> 
> Has anybody got any clues how I can get the radeon driver loading and working 
> again?
> Or even if its a bug whether it will soon be fixed?
> 
> Many Thanks
> 
> Andy
> 

$ grep modeset /etc/modprobe.d/* /proc/cmdline