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Because of Xorg 1.4 I switched from the Catalyst drivers to xf86-video-ati. The problem is Gnome3 is now very slow: it looks like there is no 2D acceleration.
I have a Radeon 7850 HD. And here are some data about my configuration:
#/etc/X11/xorg.conf.d/20-radeon.conf
Section "Device"
Identifier "Radeon"
Driver "radeon"
Option "MigrationHeuristic" "greedy"
Option "AccelMethod" "EXA"
EndSection$ lspci | grep AMD
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Pitcairn PRO [Radeon HD 7800]
01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]$ dmesg | egrep "drm|radeon"
[ 3.426952] [drm] Initialized drm 1.1.0 20060810
[ 3.457436] [drm] radeon defaulting to kernel modesetting.
[ 3.457439] [drm] radeon kernel modesetting enabled.
[ 3.457659] [drm] initializing kernel modesetting (PITCAIRN 0x1002:0x6819 0x174B:0xE221).
[ 3.457713] [drm] register mmio base: 0xE5000000
[ 3.457714] [drm] register mmio size: 262144
[ 3.457833] radeon 0000:01:00.0: VRAM: 2048M 0x0000000000000000 - 0x000000007FFFFFFF (2048M used)
[ 3.457835] radeon 0000:01:00.0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF
[ 3.457844] [drm] Detected VRAM RAM=2048M, BAR=256M
[ 3.457845] [drm] RAM width 256bits DDR
[ 3.458247] [drm] radeon: 2048M of VRAM memory ready
[ 3.458249] [drm] radeon: 512M of GTT memory ready.
[ 3.458262] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 3.458264] [drm] Driver supports precise vblank timestamp query.
[ 3.458307] radeon 0000:01:00.0: irq 47 for MSI/MSI-X
[ 3.458319] radeon 0000:01:00.0: radeon: using MSI.
[ 3.458349] [drm] radeon: irq initialized.
[ 3.458353] [drm] GART: num cpu pages 131072, num gpu pages 131072
[ 3.460181] [drm] Loading PITCAIRN Microcode
[ 3.949171] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 3.949283] radeon 0000:01:00.0: WB enabled
[ 3.949287] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0xffff8801a62c7c00
[ 3.949289] radeon 0000:01:00.0: fence driver on ring 1 use gpu addr 0x0000000080000c04 and cpu addr 0xffff8801a62c7c04
[ 3.949292] radeon 0000:01:00.0: fence driver on ring 2 use gpu addr 0x0000000080000c08 and cpu addr 0xffff8801a62c7c08
[ 3.949294] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0xffff8801a62c7c0c
[ 3.949296] radeon 0000:01:00.0: fence driver on ring 4 use gpu addr 0x0000000080000c10 and cpu addr 0xffff8801a62c7c10
[ 3.968726] [drm] ring test on 0 succeeded in 3 usecs
[ 3.968733] [drm] ring test on 1 succeeded in 1 usecs
[ 3.968737] [drm] ring test on 2 succeeded in 1 usecs
[ 3.968800] [drm] ring test on 3 succeeded in 2 usecs
[ 3.968811] [drm] ring test on 4 succeeded in 1 usecs
[ 3.986135] [drm] ib test on ring 0 succeeded in 0 usecs
[ 3.986206] [drm] ib test on ring 1 succeeded in 0 usecs
[ 3.986274] [drm] ib test on ring 2 succeeded in 0 usecs
[ 3.986331] [drm] ib test on ring 3 succeeded in 0 usecs
[ 3.986384] [drm] ib test on ring 4 succeeded in 1 usecs
[ 3.987048] [drm] Radeon Display Connectors
[ 3.987051] [drm] Connector 0:
[ 3.987052] [drm] DP-1
[ 3.987053] [drm] HPD4
[ 3.987055] [drm] DDC: 0x6530 0x6530 0x6534 0x6534 0x6538 0x6538 0x653c 0x653c
[ 3.987056] [drm] Encoders:
[ 3.987058] [drm] DFP1: INTERNAL_UNIPHY2
[ 3.987059] [drm] Connector 1:
[ 3.987060] [drm] HDMI-A-1
[ 3.987061] [drm] HPD1
[ 3.987063] [drm] DDC: 0x6550 0x6550 0x6554 0x6554 0x6558 0x6558 0x655c 0x655c
[ 3.987064] [drm] Encoders:
[ 3.987065] [drm] DFP2: INTERNAL_UNIPHY2
[ 3.987066] [drm] Connector 2:
[ 3.987067] [drm] DVI-D-1
[ 3.987068] [drm] HPD5
[ 3.987070] [drm] DDC: 0x6570 0x6570 0x6574 0x6574 0x6578 0x6578 0x657c 0x657c
[ 3.987071] [drm] Encoders:
[ 3.987072] [drm] DFP3: INTERNAL_UNIPHY1
[ 3.987073] [drm] Connector 3:
[ 3.987075] [drm] DVI-I-1
[ 3.987076] [drm] HPD6
[ 3.987077] [drm] DDC: 0x6580 0x6580 0x6584 0x6584 0x6588 0x6588 0x658c 0x658c
[ 3.987078] [drm] Encoders:
[ 3.987079] [drm] DFP4: INTERNAL_UNIPHY
[ 3.987081] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 3.987136] [drm] Internal thermal controller with fan control
[ 3.987183] [drm] radeon: power management initialized
[ 4.043964] [drm] fb mappable at 0xD114B000
[ 4.043967] [drm] vram apper at 0xD0000000
[ 4.043968] [drm] size 8294400
[ 4.043969] [drm] fb depth is 24
[ 4.043970] [drm] pitch is 7680
[ 4.044030] fbcon: radeondrmfb (fb0) is primary device
[ 4.068651] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[ 4.068653] radeon 0000:01:00.0: registered panic notifier
[ 4.068658] [drm] Initialized radeon 2.29.0 20080528 for 0000:01:00.0 on minor 0Anyone has any idea how I could fix that problem?
Last edited by Derechef (2013-03-25 08:52:55)
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I just fixed the problem by switching the 2D acceleration method to "glamor" (https://wiki.archlinux.org/index.php/ATI#Glamor).
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