<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> <div class="moz-cite-prefix">Hi Joseph, as a band aid you can try the attached patch. It should at least fix the crash at hand and allow amdgpu to continue with the boot process. Regards, Christian. Am 19.02.2018 um 14:13 schrieb Christian König: </div> <blockquote type="cite" cite="mid:5025ec18-0343-019c-29d4-43dee75c5113@gmail.com"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <div class="moz-cite-prefix">Hi Joseph, and here is the root cause of the problem: <blockquote type="cite">0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/580] (rev ef) (prog-if 00 [VGA controller]) Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 0b31 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- Interrupt: pin A routed to IRQ 11 Region 0: Memory at <ignored> (64-bit, prefetchable) [disabled] Region 2: Memory at b0000000 (64-bit, prefetchable) [disabled] [size=2M] </blockquote> The BIOS is not able to assign resources to one of the VGA adapters when there are more than eight installed. You could try with pci=realloc, but I doubt that there is much we can do in the operating system when the BIOS messed things up like that. What we should do is to prevent amdgpu from crashing so badly, e.g. allow to cleanly continue with the working hardware even when one of the devices doesn't work. <blockquote type="cite">when I load in amdgpu, everything froze, so I don't have the log.</blockquote> You can work around that using netconsole, see Documentation/networking/netconsole.txt. Going to try to fix that by just using the screen shot you send earlier, but it would be better if I can get a full log. Regards, Christian. Am 19.02.2018 um 12:55 schrieb Joseph Wang: </div> <blockquote type="cite" cite="mid:CAPoeEY8uEOt2PR5raz0Y10=xqJvxObh52UvLJQGsBMw-DhzC7A@mail.gmail.com"> <div dir="ltr">Here is the lspci without amdgpu loaded. when I load in amdgpu, everything froze, so I don't have the log. </div> <fieldset class="mimeAttachmentHeader"></fieldset> <pre wrap="">_______________________________________________ amd-gfx mailing list <a class="moz-txt-link-abbreviated" href="mailto:amd-gfx@lists.freedesktop.org" moz-do-not-send="true">amd-gfx@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" moz-do-not-send="true">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> </pre> </blockquote> </blockquote> </body> </html>