Re: Re: 回复： DVI to VGA convertor cause a problem，
Alex Deucher
alexdeucher at gmail.com
Wed Mar 25 08:06:07 PDT 2015
> [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
Your board has a DVI-D port (not DVI-I) so there are no analog pins
connected on the DVI port. It's digital only. You can't use a DVI to
VGA convertor on DVI-D, it will only work on DVI-I ports.
Alex
On Mon, Mar 23, 2015 at 11:54 AM, B模式// <377953829 at qq.com> wrote:
>
>
>
> ------------------ 原始邮件 ------------------
>
> 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 at 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 at 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
>
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