On Sat, Oct 31, 2015 at 5:22 PM, Pavel Machek pavel@ucw.cz wrote:
Hi!
4.3-rc7 kernel, graphics works reasonably well in 1600x1200 mode. But my monitor is native 1920x1080, so that mode looks pretty ugly on screen. If I go to 1920x1080, I see colored horizontal lines (often black) as soon as there's graphics activity.
pavel@half:~$ xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 VGA-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 478mm x 268mm 1920x1080 60.00*+ 1600x1200 60.00 1680x1050 59.95 1280x1024 75.02 60.02 1440x900 59.89 1024x768 75.08 60.00 800x600 75.00 60.32 640x480 75.00 60.00 720x400 70.08 pavel@half:~$ xrandr --output VGA-0 --mode 1600x1200 pavel@half:~$ xrandr --output VGA-0 --mode 1920x1080 pavel@half:~$ xrandr --output VGA-0 --mode 1600x1200
This is Acer notebook,
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710/M92 [Mobility Radeon HD 4530/4570/545v]
Any ideas?
Alex probably knows more about this, but it sounds like problems with switching the memory clocks on 3D load.
Try to disable power management completely with radeon.dpm=0 on the kernel command line or nailing the hardware at a specific power level using sysfs.
I tried that, but it still flickers.
It's probably pll stability. There seem to be a number of regressions since the pll code was rewritten to support matching the hdmi clocks more closely. Does this patch help?
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index dac78ad..b86f06a 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -569,6 +569,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, radeon_crtc->pll_flags = 0;
if (ASIC_IS_AVIVO(rdev)) { + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; + if ((rdev->family == CHIP_RS600) || (rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740))
Unfortunately, it can't be applied as is because we had a similar patch which was reverted because it regressed a bunch of other systems. The actual pll limits probably need to be tweaked.
Alex
pavel@half:~/misc/fgfs$ cat /proc/cmdline BOOT_IMAGE=(hd0,2)/l/linux/arch/x86/boot/bzImage root=/dev/sda4 resume=/dev/sda1 radeon.dpm=0
Power consumption would be totally awkward, but it should help nailing down the problem.
It seems chromium makes the flicker way worse.. even when running on different virtual desktop. I'm not sure which sysfs settings I should tweak (or if I should be tweaking them with .dpm=0). But sysfs says: pavel@half:/sys/bus/pci/drivers/radeon/0000:01:00.0$ ls backlight drm irq resource boot_vga enable local_cpulist resource0 broken_parity_status firmware_node local_cpus resource0_wc class graphics modalias resource1 config i2c-0 msi_bus resource2 consistent_dma_mask_bits i2c-1 power rom d3cold_allowed i2c-2 power_method subsystem device i2c-3 power_profile subsystem_device dma_mask_bits i2c-4 remove subsystem_vendor driver i2c-5 rescan uevent driver_override i2c-6 reset vendor pavel@half:/sys/bus/pci/drivers/radeon/0000:01:00.0$ grep . * grep: backlight: Is a directory boot_vga:1 broken_parity_status:0 class:0x030000 Binary file config matches consistent_dma_mask_bits:40 d3cold_allowed:1 device:0x9553 dma_mask_bits:40 grep: driver: Is a directory driver_override:(null) grep: drm: Is a directory enable:1 grep: firmware_node: Is a directory grep: graphics: Is a directory grep: i2c-0: Is a directory grep: i2c-1: Is a directory grep: i2c-2: Is a directory grep: i2c-3: Is a directory grep: i2c-4: Is a directory grep: i2c-5: Is a directory grep: i2c-6: Is a directory irq:16 local_cpulist:0-3 local_cpus:f modalias:pci:v00001002d00009553sv00001025sd00000212bc03sc00i00 msi_bus:1 grep: power: Is a directory power_method:profile power_profile:default grep: remove: Permission denied grep: rescan: Permission denied grep: reset: Permission denied resource:0x00000000c0000000 0x00000000cfffffff 0x0000000000042208 resource:0x0000000000005000 0x00000000000050ff 0x0000000000040101 resource:0x00000000d6200000 0x00000000d620ffff 0x0000000000040200 resource:0x0000000000000000 0x0000000000000000 0x0000000000000000 resource:0x0000000000000000 0x0000000000000000 0x0000000000000000 resource:0x0000000000000000 0x0000000000000000 0x0000000000000000 resource:0x00000000d6220000 0x00000000d623ffff 0x0000000000046202 grep: resource0: Permission denied grep: resource0_wc: Permission denied grep: resource1: Permission denied grep: resource2: Permission denied grep: rom: Permission denied grep: subsystem: Is a directory subsystem_device:0x0212 subsystem_vendor:0x1025 uevent:DRIVER=radeon uevent:PCI_CLASS=30000 uevent:PCI_ID=1002:9553 uevent:PCI_SUBSYS_ID=1025:0212 uevent:PCI_SLOT_NAME=0000:01:00.0 uevent:MODALIAS=pci:v00001002d00009553sv00001025sd00000212bc03sc00i00 vendor:0x1002
Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel