https://bugzilla.kernel.org/show_bug.cgi?id=210517

Bug ID: 210517 Summary: nouveau: DRM: failed to map fb: -28 (GeForce 6600 LE, ppc64) Product: Drivers Version: 2.5 Kernel Version: 5.10-rc6 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: erhard_f@mailbox.org Regression: Yes

Created attachment 293963 --> https://bugzilla.kernel.org/attachment.cgi?id=293963&action=edit dmesg (kernel 5.10-rc6, PowerMac G5 11,2)

With kernel 5.10-rc6 I only get a blank screen at boot, as soon as the display is switching from OpenFirmware to nouveau DRM. With kernel 5.9.12 this works fine. Also 5.10-rc6 with a Radeon X1600 works fine.

# grep nouveau dmesg_510-rc6_g5 fb0: switching to nouveaufb from OFfb NVDA,Displ nouveau 0000:0a:00.0: NVIDIA NV43 (043200a4) nouveau 0000:0a:00.0: bios: version 05.43.02.75.00 nouveau 0000:0a:00.0: fb: 128 MiB DDR1 nouveau 0000:0a:00.0: DRM: VRAM: 124 MiB nouveau 0000:0a:00.0: DRM: GART: 512 MiB nouveau 0000:0a:00.0: DRM: TMDS table version 1.1 nouveau 0000:0a:00.0: DRM: DCB version 3.0 nouveau 0000:0a:00.0: DRM: DCB outp 00: 01000100 00000028 nouveau 0000:0a:00.0: DRM: DCB outp 01: 03000102 00000000 nouveau 0000:0a:00.0: DRM: DCB outp 02: 04011210 00000028 nouveau 0000:0a:00.0: DRM: DCB outp 03: 02111212 02000100 nouveau 0000:0a:00.0: DRM: DCB outp 04: 02011211 0020c070 nouveau 0000:0a:00.0: DRM: DCB conn 00: 1030 nouveau 0000:0a:00.0: DRM: DCB conn 01: 2130 nouveau 0000:0a:00.0: DRM: failed to initialise sync subsystem, -28 nouveau 0000:0a:00.0: DRM: Setting dpms mode 3 on TV encoder (output 4) nouveau 0000:0a:00.0: DRM: failed to map fb: -28 [drm] Initialized nouveau 1.3.1 20120801 for 0000:0a:00.0 on minor 0

# grep nouveau dmesg_5912_g5 fb0: switching to nouveaufb from OFfb NVDA,Displ nouveau 0000:0a:00.0: NVIDIA NV43 (043200a4) nouveau 0000:0a:00.0: bios: version 05.43.02.75.00 nouveau 0000:0a:00.0: fb: 128 MiB DDR1 nouveau 0000:0a:00.0: DRM: VRAM: 124 MiB nouveau 0000:0a:00.0: DRM: GART: 512 MiB nouveau 0000:0a:00.0: DRM: TMDS table version 1.1 nouveau 0000:0a:00.0: DRM: DCB version 3.0 nouveau 0000:0a:00.0: DRM: DCB outp 00: 01000100 00000028 nouveau 0000:0a:00.0: DRM: DCB outp 01: 03000102 00000000 nouveau 0000:0a:00.0: DRM: DCB outp 02: 04011210 00000028 nouveau 0000:0a:00.0: DRM: DCB outp 03: 02111212 02000100 nouveau 0000:0a:00.0: DRM: DCB outp 04: 02011211 0020c070 nouveau 0000:0a:00.0: DRM: DCB conn 00: 1030 nouveau 0000:0a:00.0: DRM: DCB conn 01: 2130 nouveau 0000:0a:00.0: DRM: MM: using M2MF for buffer copies nouveau 0000:0a:00.0: DRM: Setting dpms mode 3 on TV encoder (output 4) nouveau 0000:0a:00.0: DRM: allocated 1680x1050 fb: 0x9000, bo 000000004e24135e nouveau 0000:0a:00.0: [drm] fb0: nouveaudrmfb frame buffer device [drm] Initialized nouveau 1.3.1 20120801 for 0000:0a:00.0 on minor 0

Some data about the card: # lspci -v -s 0000:0a:00.0 0000:0a:00.0 VGA compatible controller: NVIDIA Corporation NV43 [GeForce 6600 LE] (rev a2) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation NV43 [GeForce 6600 LE] Device tree node: /sys/firmware/devicetree/base/pci@0,f0000000/NVDA,Parent@0 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at b2000000 (32-bit, non-prefetchable) [size=16M] Memory at b8000000 (64-bit, prefetchable) [size=128M] Memory at b1000000 (64-bit, non-prefetchable) [size=16M] Expansion ROM at b0000000 [disabled] [size=128K] Capabilities: [60] Power Management version 2 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Kernel modules: nouveau

Some data about the machine: # inxi -b --no-host System: Kernel: 5.9.12-gentoo-PowerMacG5 ppc64 bits: 64 Desktop: MATE 1.24.1 Distro: Gentoo Base System release 2.7 Machine: Type: PowerPC Device System: PowerMac11 2 details: PowerMac11 2 rev: 1.1 (pvr 0044 0101) serial: R6V CPU: Info: Dual Core PPC970MP altivec supported [MCP] speed: 2300 MHz min/max: 1150/2300 MHz Graphics: Device-1: NVIDIA NV43 [GeForce 6600 LE] driver: N/A Device-2: Advanced Micro Devices [AMD/ATI] RV530 [Radeon X1600 PRO] driver: radeon v: kernel Display: x11 server: X.Org 1.20.8 driver: ati,radeon resolution: 1680x1050~60Hz OpenGL: renderer: ATI RV530 v: 2.1 Mesa 20.3.0 Network: Device-1: Broadcom and subsidiaries NetXtreme BCM5780 Gigabit Ethernet driver: tg3 Device-2: Broadcom and subsidiaries NetXtreme BCM5780 Gigabit Ethernet driver: tg3 Device-3: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169