<div> </div><div><div> </div><div> </div><div style="font-size: 12px;font-family: Arial Narrow;padding:2px 0 2px 0;">------------------ 原始邮件 ------------------</div> Jesse On 03/21/2015 12:46 AM, Bģʽ// wrote: > - hi Barnes： > the kernel driver is failing to get the EDID from the DVI attached > monitor . I print the drm_get_edid() function ret val on two different > kernel versionn > 2.6.32-131 and 2.6.32-358(this version kernel can work normally) ，i > find the ret val > is different ,and i think EDID should be same for one monitor. the log > on different kernel version > as shown blow : > ================================================================= > this is 2.6.32-131 kernel driver log about DRM： > [drm] Initialized drm 1.1.0 20060810 > [drm] radeon defaulting to kernel modesetting. > [drm] radeon kernel modesetting enabled. > NUM[.1.] [drm_pci_init]... > PCI: Setting latency timer of device 0000:01:05.0 to 64 > [drm] initializing kernel modesetting (RS780 0x1002:0x9615). > -->swiotlb_dma_supported(0x872fffff, 0xffffffffff) > [drm] rdev->need_dma32: 0 > [drm] register mmio base: 0x48000000 > [drm] register mmio size: 65536 > ATOM BIOS: 113 > radeon 0000:01:05.0: VRAM: 128M 0x0000000040000000 - 0x0000000047FFFFFF > (128M used) > radeon 0000:01:05.0: GTT: 512M 0x0000000048000000 - 0x0000000067FFFFFF > [drm:rs690_pm_info] *ERROR* No integrated system info for your GPU, > using safe default > [drm:radeon_atombios_sideport_present] *ERROR* Unsupported IGP table: 1 4 > [drm] Detected VRAM RAM=128M, BAR=128M > [drm] RAM width 32bits DDR > [TTM] Zone kernel: Available graphics memory: 2017416 kiB. > [TTM] Initializing pool allocator. > [drm] radeon: 128M of VRAM memory ready > [drm] radeon: 512M of GTT memory ready. > [drm] radeon: irq initialized. > [drm] GART: num cpu pages 32768, num gpu pages 131072 > [drm] Loading RS780 Microcode > platform radeon_cp.0: firmware: using built-in firmware radeon/RS780_pfp.bin > platform radeon_cp.0: firmware: using built-in firmware radeon/RS780_me.bin > platform radeon_cp.0: firmware: using built-in firmware radeon/R600_rlc.bin > radeon 0000:01:05.0: WB enabled > [drm] ring test succeeded in 0 usecs > [drm] radeon: ib pool ready. > [drm] ib test succeeded in 0 usecs > [drm] Enabling audio support > [drm] Radeon Display Connectors > [drm] Connector 0: > [drm] VGA > [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c > [drm] Encoders: > [drm] CRT1: INTERNAL_KLDSCP_DAC1 > [drm] Connector 1: > [drm] DVI-D > [drm] HPD3 > [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c > [drm] Encoders: > [drm] DFP3: INTERNAL_KLDSCP_LVTMA > [drm-cs] drm_get_edid() func .. edid=980000017e8e5a00 > [drm-cs] drm_get_edid() func .. edid=980000017e86ac80 > [drm-cs] drm_get_edid() func .. edid=980000017e8e5a00 > [drm] -->> timing->pixel_clock= 14850 > [drm] cs---->>>mode->type=64 > cs->> mode->clock=148500 > cs->> mode->hdisplay=1920 > cs->> mode->hsync_start=2008 > cs->> mode->hsync_end=2052 > cs->> mode->htotal=2200 > cs->> mode->vdisplay=1080 > cs->> mode->vsync_start=1084 > cs->> mode->vsync_end=1089 > cs->> mode->vtotal=1125 > [drm] drm_mode_set_name func ... > [drm] -->> timing->pixel_clock= 0 > [drm] -->> timing->pixel_clock= 0 > [drm] -->> timing->pixel_clock= 0 > [drm] drm_mode_set_name func ... > [drm-cs] drm_get_edid() func .. edid=980000017e869a80 > [drm] -->> timing->pixel_clock= 10650 > [drm] cs---->>>mode->type=64 > cs->> mode->clock=106500 > cs->> mode->hdisplay=1440 > cs->> mode->hsync_start=1520 > cs->> mode->hsync_end=1672 > cs->> mode->htotal=1904 > cs->> mode->vdisplay=900 > cs->> mode->vsync_start=903 > cs->> mode->vsync_end=909 > cs->> mode->vtotal=934 > [drm] drm_mode_set_name func ... > [drm] -->> timing->pixel_clock= 0 > [drm] -->> timing->pixel_clock= 0 > [drm] -->> timing->pixel_clock= 0 > [drm] -->> timing->pixel_clock= 7425 > [drm] cs---->>>mode->type=64 > cs->> mode->clock=74250 > cs->> mode->hdisplay=1920 > cs->> mode->hsync_start=2448 > cs->> mode->hsync_end=2492 > cs->> mode->htotal=2640 > cs->> mode->vdisplay=540 > cs->> mode->vsync_start=542 > cs->> mode->vsync_end=547 > cs->> mode->vtotal=562 > [drm] drm_mode_set_name func ... > [drm] fb mappable at 0x40144000 > [drm] vram apper at 0x40000000 > [drm] size 4161536 > [drm] fb depth is 16 > [drm] pitch is 3840 > Console: switching to colour frame buffer device 180x56 > fb0: radeondrmfb frame buffer device > drm: registered panic notifier > ================================================================================ > > ### > this is 2.6.32-358 kernel driver log about DRM，there is some log more > info： > ================================================================================ > [drm] Initialized drm 1.1.0 20060810 > [drm] radeon defaulting to kernel modesetting. > [drm] radeon kernel modesetting enabled. > [drm] initializing kernel modesetting (RS780 0x1002:0x9615 0x1002:0x0000). > -->swiotlb_dma_supported(0x8855bfff, 0xffffffffff) > -->swiotlb_dma_supported(0x8855bfff, 0xffffffffff) > [drm] register mmio base: 0x48000000 > [drm] register mmio size: 65536 > ATOM BIOS: 113 > radeon 0000:01:05.0: VRAM: 128M 0x0000000040000000 - 0x0000000047FFFFFF > (128M used) > radeon 0000:01:05.0: GTT: 512M 0x0000000048000000 - 0x0000000067FFFFFF > [drm:rs690_pm_info] *ERROR* No integrated system info for your GPU, > using safe default > [drm:radeon_atombios_sideport_present] *ERROR* Unsupported IGP table: 1 4 > [drm] Detected VRAM RAM=128M, BAR=128M > [drm] RAM width 32bits DDR > [TTM] Zone kernel: Available graphics memory: 2008016 kiB > [TTM] Initializing pool allocator > [TTM] Initializing DMA pool allocator > [drm] radeon: 128M of VRAM memory ready > [drm] radeon: 512M of GTT memory ready. > [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). > [drm] Driver supports precise vblank timestamp query. > [drm] radeon: irq initialized. > [drm] GART: num cpu pages 32768, num gpu pages 131072 > [drm] Loading RS780 Microcode > platform radeon_cp.0: firmware: using built-in firmware radeon/RS780_pfp.bin > platform radeon_cp.0: firmware: using built-in firmware radeon/RS780_me.bin > platform radeon_cp.0: firmware: using built-in firmware radeon/R600_rlc.bin > [drm] PCIE GART of 512M enabled (table at 0x0000000040040000). > radeon 0000:01:05.0: WB enabled > radeon 0000:01:05.0: fence driver on ring 0 use gpu addr > 0x0000000048000c00 and cpu addr 0x980000017fd48c00 > PCI: Setting latency timer of device 0000:01:05.0 to 64 > [drm] ring test on 0 succeeded in 0 usecs > [drm] ib test on ring 0 succeeded in 0 usecs > [drm] Radeon Display Connectors > [drm] Connector 0: > [drm] VGA-1 > [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c > [drm] Encoders: > [drm] CRT1: INTERNAL_KLDSCP_DAC1 > [drm] Connector 1: > [drm] DVI-D-1 > [drm] HPD3 > [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c > [drm] Encoders: > [drm] DFP3: INTERNAL_KLDSCP_LVTMA > [drm] Try to fetch EDID information by calling i2c driver function. > drm_do_probe_ddc_edid().. > [drm] Try to fetch EDID information by calling i2c driver function. > drm_do_probe_ddc_edid().. > [drm] drm_get_edid() func .. edid=980000017fd3dc00 > [drm--lonxin] -->> timing->pixel_clock= 14850 > [drm--loongson]-->>>mode->clock=148500 > [drm--loongson]-->>>mode->display=1920 > [drm-loongson]-->>>mode->vdisplay=1080 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm] Try to fetch EDID information by calling i2c driver function. > drm_do_probe_ddc_edid().. > [drm] Try to fetch EDID information by calling i2c driver function. > drm_do_probe_ddc_edid().. > [drm] Try to fetch EDID information by calling i2c driver function. > drm_do_probe_ddc_edid().. > [drm] drm_get_edid() func .. edid=980000017f953280 > [drm--lonxin] -->> timing->pixel_clock= 10650 > [drm--loongson]-->>>mode->clock=106500 > [drm--loongson]-->>>mode->display=1440 > [drm-loongson]-->>>mode->vdisplay=900 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm--lonxin] -->> timing->pixel_clock= 0 > [drm--lonxin] -->> timing->pixel_clock= 7425 > [drm--loongson]-->>>mode->clock=74250 > [drm--loongson]-->>>mode->display=1920 > [drm-loongson]-->>>mode->vdisplay=540 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 7425 > [drm--loongson]-->>>mode->clock=74250 > [drm--loongson]-->>>mode->display=1920 > [drm-loongson]-->>>mode->vdisplay=540 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 7425 > [drm--loongson]-->>>mode->clock=74250 > [drm--loongson]-->>>mode->display=1280 > [drm-loongson]-->>>mode->vdisplay=720 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 2700 > [drm--loongson]-->>>mode->clock=27000 > [drm--loongson]-->>>mode->display=720 > [drm-loongson]-->>>mode->vdisplay=576 > [drm]--->>>mode->type=64 > [drm--lonxin] -->> timing->pixel_clock= 2700 > [drm--loongson]-->>>mode->clock=27000 > [drm--loongson]-->>>mode->display=720 > [drm-loongson]-->>>mode->vdisplay=480 > [drm]--->>>mode->type=64 > [drm] fb mappable at 0x40148000 > [drm] vram apper at 0x40000000 > [drm] size 8306688 > [drm] fb depth is 24 > [drm] pitch is 7680 > Console: switching to colour frame buffer device 180x56 > fb0: radeondrmfb frame buffer device > drm: registered panic notifier > ===================================================================================== > and i wanna know if there is some thing wrong ,if the problem is here > ,how can i solve on kernel 2.6.32-131 > > Thanks, > xiezhongtian > > > > ------------------ 原始邮件 ------------------ > *发件人:* "jesse.barnes"<jesse.barnes@intel.com>; > *发送时间:* 2015年3月21日(星期六) 凌晨3:45 > *收件人:* "B模式//"<377953829@qq.com>; > *主题:* Re: DVI to VGA convertor cause a problem， > > On 03/20/2015 12:25 AM, B模式// wrote: >> hi ，Barnes：‍ >> now, i met a problem about DVI on kernel-2.6.32-131, Now >> situation is like that, I have two monitors.Demand is through two vga >> devices to connect to the monitor. but you know, i have a vga and dvi >> output , so i use a DVI to VGA convertor ,But after the converter >> display not lit up. >> Because some other development is based on this version of the kernel, >> so only on the kernel version development.‍ > > There could be a few things going on: > - DVI adapter isn't a DVI-I adapter, which includes the VGA interface > - the DVI port doesn't support DVI-I > - the kernel driver is failing to get the EDID from the DVI attached > monitor > and possibly other bugs. > > Can you file a bug at bugs.freedesktop.org if you don't figure things > out? You can use > https://01.org/linuxgraphics/documentation/how-report-bugs > <https://01.org/linuxgraphics/documentation/how-report-bugs> to help you > collect the info we need. > > Thanks, > Jesse </div>