Created attachment 436616 [details] .config of the realtime kernel Booting with rt-sources-4.6.1_p3 (and also with rt-sources-4.4.9_p17) the console output stops with: ... futex hash table entries: 2048 (order: 5 131072 Bytes) audit: initializing netlink subsys (disabled) It seems me that this is point where the system should switch from VGA to Framebuffer resolution. After this point I see activity of the harddisk. And some time later I even can blindly login. What I can prove by logging in via ssh. If I compared the kernel configuration of rt-sources-4.6.1_p3 with the kernel configuration of gentoo-sources-4.6.1 and could not find relevant differences with respect to framebuffer. Looking in the output of 'journalctl -b' I see: ... Jun 06 12:02:45 lynx kernel: [drm] Initialized drm 1.1.0 20060810 Jun 06 12:02:45 lynx kernel: ACPI Warning: \_SB.PCI0.PEG.VID._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20160108/nsarguments-95) Jun 06 12:02:45 lynx kernel: ACPI Warning: \_SB.PCI0.PEG.VID._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20160108/nsarguments-95) Jun 06 12:02:45 lynx kernel: pci 0000:01:00.0: optimus capabilities: enabled, status dynamic power, hda bios codec supported Jun 06 12:02:45 lynx kernel: VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.PEG_.VID_ handle Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: enabling device (0000 -> 0003) Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: NVIDIA GF108 (0c1780a1) Jun 06 12:02:45 lynx kernel: ACPI Error: Field [TBF3] at 294912 exceeds Buffer [NULL] size 262144 (bits) (20160108/dsopcode-236) Jun 06 12:02:45 lynx kernel: ACPI Error: Method parse/execution failed [\_SB.PCI0.PEG.VID.GETB] (Node ffff88042d0d8f00), AE_AML_BUFFER_LIMIT (20160108/psparse-542) Jun 06 12:02:45 lynx kernel: ACPI Error: Method parse/execution failed [\_SB.PCI0.PEG.VID._ROM] (Node ffff88042d0d8f28), AE_AML_BUFFER_LIMIT (20160108/psparse-542) Jun 06 12:02:45 lynx kernel: failed to evaluate ROM got AE_AML_BUFFER_LIMIT Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: bios: version 70.08.a8.03.02 Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: fb: 512 MiB DDR3 ... Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: DRM: DCB conn 04: 01400446 Jun 06 12:02:45 lynx kernel: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). Jun 06 12:02:45 lynx kernel: [drm] Driver supports precise vblank timestamp query. Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: DRM: MM: using COPY0 for buffer copies Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: No connectors reported connected with modes Jun 06 12:02:45 lynx kernel: [drm] Cannot find any crtc or sizes - going 1024x768 Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: DRM: allocated 1024x768 fb: 0x60000, bo ffff88042c7a6400 Jun 06 12:02:45 lynx kernel: Console: switching to colour frame buffer device 128x48 Jun 06 12:02:45 lynx kernel: nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device Jun 06 12:02:45 lynx kernel: [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 0 Jun 06 12:02:45 lynx kernel: ahci 0000:00:1f.2: version 3.0
You have CONFIG_EXPERT=y. What happens with CONFIG_EXPERT=n? Does this happen with 4.1.20_p23?
(In reply to Karl Lindén from comment #1) > You have CONFIG_EXPERT=y. What happens with CONFIG_EXPERT=n? > > Does this happen with 4.1.20_p23? If I install rt-sources-4.6.1_p3 with CONFIG_EXPERT not set I see two lines more during booting: ... futex hash table entries: 2048 (order: 5, 131072 bytes) audit: initializing netlink subsys (disabled) audit: type=200 audit(1465477709,595:1): initialized workingset: timestamp_bits=44 max_order=22 bucket_oerder=0 root@lynx:/root(3)# grep CONFIG_EXPERT /usr/src/linux-4.6.1-rt3/.config # CONFIG_EXPERT is not set
Created attachment 437004 [details] complete .config for linux-4.6.1-rt3 with CONFIG_EXPERT is not set
Also try with version 4.6.2_p5. If the problem persists maybe you should ask upstream and see what they say. I do not see what might be causing this.
Have you tried the latest kernels? Ping?
Closing due to lack of activity.
