<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> So your vbios has table v3.1 so it should not be affected by that patch. Does reverting that patch actually fix the issue? Alex </div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr">From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Daniel Andersson <engywook@gmail.com> Sent: Thursday, July 5, 2018 12:22:17 PM To: Alex Deucher Cc: amd-gfx@lists.freedesktop.org Subject: Re: BUG: *ERROR* No EDID read <div> </div> </div> <div class="BodyFragment"> <div class="PlainText">I have not flashed any GPU BIOS. It's not a reference Vega though, Sapphire something. Maybe they made changes? vbios is attached. // Daniel On 5 July 2018 at 15:38, Alex Deucher <alexdeucher@gmail.com> wrote: > On Mon, Jul 2, 2018 at 5:39 PM, Daniel Andersson <engywook@gmail.com> wrote: >> Sure, bisecting gets me 6e65fb862064663ad3a08f964af1e8f3f2abf688 . >> >> In drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c, >> get_firmware_info_v3_1() works but get_firmware_info_v3_2() does not >> do the right thing for my Vega. >> >> Could I break my GPU if I were to set some bad/wrong frequency there? > > vega10 should not hit that new path at all. Have you edited your > vbios? Can you send us a copy? To get a copy of the vbios: > > Without the driver loaded: > (as root) > (use lspci to get the bus id) > cd /sys/bus/pci/devices/<pci bus id> > echo 1 > rom > cat rom > /tmp/vbios.rom > echo 0 > rom > > If the driver is loaded: > (as root) > cat /sys/kernel/debug/dri/0/amdgpu_vbios > /tmp/vbios.rom > > Alex > >> >> lspci: >> 43:00.0 VGA compatible controller: Advanced Micro Devices, Inc. >> [AMD/ATI] Vega 10 XT [Radeon RX Vega 64] (rev c1) (prog-if 00 [VGA >> controller]) >> Subsystem: Sapphire Technology Limited Vega 10 XT [Radeon RX Vega >> 64] >> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- >> Stepping- SERR- FastB2B- DisINTx+ >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- >> <TAbort- <MAbort- >SERR- <PERR- INTx- >> Latency: 0, Cache Line Size: 64 bytes >> Interrupt: pin A routed to IRQ 85 >> Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M] >> Region 2: Memory at e0000000 (64-bit, prefetchable) [size=2M] >> Region 4: I/O ports at f000 [size=256] >> Region 5: Memory at ed400000 (32-bit, non-prefetchable) [size=512K] >> Expansion ROM at ed480000 [disabled] [size=128K] >> Capabilities: [48] Vendor Specific Information: Len=08 <?> >> Capabilities: [50] Power Management version 3 >> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA >> PME(D0-,D1+,D2+,D3hot+,D3cold+) >> Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- >> Capabilities: [64] Express (v2) Legacy Endpoint, MSI 00 >> DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us, L1 >> unlimited >> ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- >> DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- >> RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ >> MaxPayload 256 bytes, MaxReadReq 512 bytes >> DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- >> TransPend- >> LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency >> L0s <64ns, L1 <1us >> ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+ >> LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+ >> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- >> LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- >> BWMgmt- ABWMgmt- >> DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR+, >> OBFF Not Supported >> AtomicOpsCap: 32bit- 64bit- 128bitCAS- >> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF >> Disabled >> AtomicOpsCtl: ReqEn- >> LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis- >> Transmit Margin: Normal Operating Range, >> EnterModifiedCompliance- ComplianceSOS- >> Compliance De-emphasis: -6dB >> LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+, >> EqualizationPhase1+ >> EqualizationPhase2+, EqualizationPhase3+, >> LinkEqualizationRequest- >> Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ >> Address: 00000000fee00000 Data: 0000 >> Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1 >> Len=010 <?> >> Capabilities: [150 v2] Advanced Error Reporting >> UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- >> MalfTLP- ECRC- UnsupReq- ACSViol- >> UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- >> MalfTLP- ECRC- UnsupReq- ACSViol- >> UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ >> MalfTLP+ ECRC- UnsupReq- ACSViol- >> CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ >> CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ >> AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- >> ECRCChkCap+ ECRCChkEn- >> MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap- >> HeaderLog: 00000000 00000000 00000000 00000000 >> Capabilities: [200 v1] #15 >> Capabilities: [270 v1] #19 >> Capabilities: [2a0 v1] Access Control Services >> ACSCap: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- >> EgressCtrl- DirectTrans- >> ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- >> EgressCtrl- DirectTrans- >> Capabilities: [2b0 v1] Address Translation Service (ATS) >> ATSCap: Invalidate Queue Depth: 00 >> ATSCtl: Enable+, Smallest Translation Unit: 00 >> Capabilities: [2c0 v1] Page Request Interface (PRI) >> PRICtl: Enable- Reset- >> PRISta: RF- UPRGI- Stopped+ >> Page Request Capacity: 00000020, Page Request Allocation: 00000000 >> Capabilities: [2d0 v1] Process Address Space ID (PASID) >> PASIDCap: Exec+ Priv+, Max PASID Width: 10 >> PASIDCtl: Enable- Exec- Priv- >> Capabilities: [320 v1] Latency Tolerance Reporting >> Max snoop latency: 0ns >> Max no snoop latency: 0ns >> Kernel driver in use: amdgpu >> Kernel modules: amdgpu >> >> // Daniel >> >> On 2 July 2018 at 21:29, Alex Deucher <alexdeucher@gmail.com> wrote: >>> On Mon, Jul 2, 2018 at 3:21 PM, Daniel Andersson <engywook@gmail.com> wrote: >>>> I get: >>>> [drm:dc_link_detect [amdgpu]] *ERROR* No EDID read. >>>> on boot. This started happening on 4.17 and is still an issue on 4.18-rc2. >>>> >>>> I have a Vega64 connected on Display Port to a monitor(1440p). The monitor >>>> doesn't have any additional ports so I can't test HDMI. >>>> >>>> xrandr: >>>> Screen 0: minimum 320 x 200, current 1024 x 768, maximum 16384 x 16384 >>>> DisplayPort-0 connected 1024x768+0+0 (normal left inverted right x axis y >>>> axis) 0mm x 0mm >>>> 1024x768 60.00* >>>> 800x600 60.32 56.25 >>>> 848x480 60.00 >>>> 640x480 59.94 >>>> DisplayPort-1 disconnected (normal left inverted right x axis y axis) >>>> HDMI-A-0 disconnected (normal left inverted right x axis y axis) >>>> HDMI-A-1 disconnected (normal left inverted right x axis y axis) >>>> >>>> The 1440p resolution worked on 4.16. >>> >>> Can you use git to bisect? >>> >>> Alex </div> </div> </body> </html>