Hello, An Aspeed VGA monitor, in my case AST 2400, after a suspend/resume cycle suffers with a "No Signal" state. This is also true of a IPMI/BMC remote console. To restore the "Signal" state requires a reboot or the following workaround. To restore the "Signal" state without rebooting issue the following commands from a SSH session or serial console after every suspend/resume cycle: sudo modprobe -r ast sudo modprobe ast This a home media server which is updated infrequently, so I am unable offer any guidance as to when this issue started occurring. Regards, Cary Garrett Current environment: uname -a: Linux xxxxxx-server 6.8.7-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 17 Apr 2024 15:20:28 +0000 x86_64 GNU/Linux modinfo: filename: /lib/modules/6.8.7-arch1-1/kernel/drivers/gpu/drm/ast/ast.ko.zst license: GPL and additional rights description: AST author: Dave Airlie firmware: ast_dp501_fw.bin srcversion: 7E39455BCA2D11E968D8B2B alias: pci:v00001A03d00002010sv*sd*bc03sc*i* alias: pci:v00001A03d00002000sv*sd*bc03sc*i* depends: i2c-algo-bit retpoline: Y intree: Y name: ast vermagic: 6.8.7-arch1-1 SMP preempt mod_unload sig_id: PKCS#7 signer: Build time autogenerated kernel key sig_key: 76:06:C7:84:BC:2F:C6:38:38:61:C1:6F:32:D5:6A:03:88:22:68:1C sig_hashalgo: sha512 signature: 30:66:02:31:00:AD:83:EB:D2:9B:91:E6:C3:9B:52:89:51:4B:BB:06: DE:D7:44:A6:6B:07:92:AA:75:2A:0B:20:26:73:58:09:DF:C3:86:C6: FC:B7:D4:13:5F:5D:35:4D:67:89:73:0E:C2:02:31:00:C3:98:99:67: B4:74:02:5C:6D:D3:81:13:D4:9F:B4:F4:CF:37:8A:7C:84:8C:73:BF: DF:4D:D5:34:B0:0A:CE:0E:59:67:28:98:07:BF:D7:FA:68:B3:37:43: 02:1C:59:3E parm: modeset:Disable/Enable modesetting (int) lspci: 04:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 30) (prog-if 00 [VGA controller]) DeviceName: Onboard VGA Subsystem: Super Micro Computer Inc Device 0804 Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 16 Region 0: Memory at f6000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at f7000000 (32-bit, non-prefetchable) [size=128K] Region 2: I/O ports at d000 [size=128] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: [40] Power Management version 3 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] MSI: Enable- Count=1/4 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Kernel driver in use: ast Kernel modules: ast
