In brief, it is very easy for an innocent user to completely hang the system while performing standard actions in midnight commander running in text console. (it is enough to press ctrl-o or enter). Actually I "redirect" this report from the bug 81854 ("mc hangs system when i press ctrl-o in console") and one should refer there for the details. Initially we thought the problem is in midnight commander, but after some discussion we came to conclusion that most likely it has something to do with the kernel, especially its option CONFIG_FB_VESA_TNG. Reproducible: Always Steps to Reproduce: 1. prepare a kernel with CONFIG_FB_VESA_TNG set on. 2. run mc in a text cosole 3a. hit enter on a *.tex file. nano editor will open. Close it wih ctrl-X or 3b. hit enter on a *.pdf file Actual Results: System hangs completely (keyboard, main switch, no access via ssh, although ping from remote machine still works). Expected Results: nano should exit and I should return to midnight commander. Nothing should happen or an error message should be displayed when trying to open pdf in text console. System uname: 2.6.10-gentoo-r6 i686 AMD Athlon(tm) XP 2500+ Gentoo Base System version 1.4.16 Python: dev-lang/python-2.3.4-r1 [2.3.4 (#1, Feb 22 2005, 11:56:00)] ccache version 2.3 [enabled] dev-lang/python: 2.3.4-r1 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.5, 1.6.3, 1.4_p6, 1.8.5-r3, 1.9.4, 1.7.9-r1 sys-devel/binutils: 2.15.92.0.2-r1 sys-devel/libtool: 1.5.10-r4 virtual/os-headers: 2.4.22-r1 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O2 -march=athlon-xp -pipe CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=athlon-xp -pipe DISTDIR="/usr/portage/distfiles" FEATURES="CCACHE autoaddcvs autoconfig ccache distlocks sandbox sfperms" GENTOO_MIRRORS="ftp://linux.rz.ruhr-uni-bohum.de/gentoo-mirror/ ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo http://gentoo.zie.pg.gda.pl" LANG="pl_PL" LC_ALL="pl_PL" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/usr/temp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 3dnow X alsa apm arts avi berkdb bitmap-fonts cdr crypt cups curl doc dvd emboss encode esd f77 fam fbcon font-server foomaticdb fortran gdbm gif gmp gnome gpm gstreamer gtk gtk2 imagemagic imagemagick imlib ipv6 jpeg kde libg++ libwww mad mikmod mime mmx motif mozilla mpeg ncurses nls oggvorbis opengl oss pam pdflib perl png python qt quicktime readline sdl spell sse ssl svga tcltk tcpd tetex tidy tiff truetype truetype-fonts type1-fonts usb wxwindows xml2 xmms xv zlib" Unset: ASFLAGS, CBUILD, CTARGET, LDFLAGS, PORTDIR_OVERLAY ------- GRUB CONFIGURATION ----- default 0 timeout 20 splashimage=(hd0,2)/grub/splash.xpm.gz title = My 2nd Gentoo Linux 2.6.10-gentoo-r6 by zkoza root(hd0,2) kernel /kernel-2.6.10-my2-gentoo-r6 root=/dev/hda6 video=1024x768-32@80 splash=verbose
OK. If you are sure this is caused by vesafb-tng (ie. with the current config everything works, and when you additionally enable CONFIG_FB_VESA_TNG, it starts breaking), please provide information listed in: http://dev.gentoo.org/~spock/projects/vesafb-tng/archive/HOWTO_report_vesafb-tng_bugs.txt Also, try disabling fbsplash, and changing your command line parameters from video=1024x768-32@80 to video=vesafb:1024x768-32@80. It would also be helpful if you could attach your kernel config.
Apaprently your advice "to disable fbsplash and change the command line parameters from video=1024x768-32@80 to video=vesafb:1024x768-32@80" did the job. My present grub.config reads: ---- grub.conf ---- default 0 timeout 20 title = My 2nd Gentoo Linux 2.6.10-gentoo-r6 by zkoza root(hd0,2) kernel /kernel-2.6.10-my2-gentoo-r6 root=/dev/hda6 video=vesafb:1024x768-32@80 ---- end of grub.conf ---- With this settings, Midnight Commander works just perfect. Morover, I can see a considerable speed-up in switching time between the consoles (with old config the delay was approx 1 second).
That's nice to hear, but we still need to find out the real cause of the problem, ie. was it fbsplash or was the incorrect video= setting. When you get some free time, please try re-enabling fbsplash (splash=verbose,theme:foo) and see if the problems with mc can be reproduced.
I have made some tests and now have no doubt that the problem is casused by incorrect video= string. Here's an output of diff between dmesg in correct and icorrect configurations: (I deleted lines referring to the filesystem check). ------- start ----- 38c38 < Kernel command line: root=/dev/hda6 video=vesafb:1024x768-32@80 splash=verbose--- > Kernel command line: root=/dev/hda6 video=1024x768-32@80 splash=verbose 116c116 < vesafb: framebuffer at 0xd8000000, mapped to 0xf8880000, using 6144k, total 65536k --- > vesafb: framebuffer at 0xd8000000, mapped to 0xf8880000, using 1536k, total 65536k ----------- end -------- Here's my dmesg output in the current (incorrect) configuration: ------ start ------ Linux version 2.6.10-gentoo-r6 (root@zbyszek) (gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)) #3 Mon Jan 24 14:15:13 CET 2005 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000003fff0000 (usable) BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS) BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data) BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved) Warning only 896MB will be used. Use a HIGHMEM enabled kernel. 896MB LOWMEM available. found SMP MP-table at 000f4cd0 On node 0 totalpages: 229376 DMA zone: 4096 pages, LIFO batch:1 Normal zone: 225280 pages, LIFO batch:16 HighMem zone: 0 pages, LIFO batch:1 DMI 2.3 present. ACPI: RSDP (v000 GBT ) @ 0x000f6640 ACPI: RSDT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x3fff3000 ACPI: FADT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x3fff3040 ACPI: MADT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x3fff72c0 ACPI: DSDT (v001 GBT AWRDACPI 0x00001000 MSFT 0x0100000c) @ 0x00000000 ACPI: Local APIC address 0xfee00000 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) Processor #0 6:10 APIC version 16 ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1]) Using ACPI for processor (LAPIC) configuration information Intel MultiProcessor Specification v1.4 Virtual Wire compatibility mode. OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000 I/O APIC #2 Version 17 at 0xFEC00000. Enabling APIC mode: Flat. Using 1 I/O APICs Processors: 1 Built 1 zonelists Kernel command line: root=/dev/hda6 video=1024x768-32@80 splash=verbose fbsplash: verbose mapped APIC to ffffd000 (fee00000) Initializing CPU#0 PID hash table entries: 4096 (order: 12, 65536 bytes) Detected 1836.551 MHz processor. Using tsc for high-res timesource Console: colour VGA+ 80x25 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 905804k/917504k available (2052k kernel code, 11272k reserved, 795k data, 188k init, 0k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay loop... 3612.67 BogoMIPS (lpj=1806336) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) CPU: After generic identify, caps: 0383fbff c1c3fbff 00000000 00000000 CPU: After vendor identify, caps: 0383fbff c1c3fbff 00000000 00000000 CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 512K (64 bytes/line) CPU: After all inits, caps: 0383fbff c1c3fbff 00000000 00000020 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: AMD Athlon(tm) XP 2500+ stepping 00 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. ACPI: setting ELCR to 0200 (from 0a20) NET: Registered protocol family 16 PCI: PCI BIOS revision 2.10 entry at 0xfa110, last bus=1 PCI: Using configuration type 1 mtrr: v2.0 (20020519) ACPI: Subsystem revision 20041105 ACPI: Interpreter enabled ACPI: Using PIC for interrupt routing ACPI: PCI Root Bridge [PCI0] (00:00) PCI: Probing PCI hardware (bus 00) ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] ACPI: PCI Interrupt Link [LNKA] (IRQs 1 3 4 *5 6 7 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKB] (IRQs 1 3 4 *5 6 7 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKC] (IRQs 1 3 4 5 6 7 10 *11 12 14 15) ACPI: PCI Interrupt Link [LNKD] (IRQs 1 3 4 5 6 7 10 *11 12 14 15) ACPI: PCI Interrupt Link [ALKA] (IRQs 20) *0, disabled. ACPI: PCI Interrupt Link [ALKB] (IRQs 21) *0, disabled. ACPI: PCI Interrupt Link [ALKC] (IRQs 22) *0, disabled. ACPI: PCI Interrupt Link [ALKD] (IRQs 23) *0, disabled. Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init pnp: PnP ACPI: found 15 devices SCSI subsystem initialized PCI: Using ACPI for IRQ routing ** PCI interrupts are no longer routed automatically. If this ** causes a device to stop working, it is probably because the ** driver failed to call pci_enable_device(). As a temporary ** workaround, the "pci=routeirq" argument restores the old ** behavior. If this argument makes the device work again, ** please email the output of "lspci" to bjorn.helgaas@hp.com ** so I can fix the driver. spurious 8259A interrupt: IRQ7. pnp: 00:01: ioport range 0x4000-0x407f could not be reserved pnp: 00:01: ioport range 0x40f0-0x40ff could not be reserved pnp: 00:01: ioport range 0x5000-0x500f has been reserved Machine check exception polling timer started. apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac) apm: overridden by ACPI. devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au) devfs: boot_options: 0x0 Initializing Cryptographic API inotify device minor=63 Real Time Clock Driver v1.12 Non-volatile memory driver v1.2 vesafb: NVIDIA Corporation, NV18 Board - c116dnz , Chip Rev A2 (OEM: NVIDIA) vesafb: VBE version: 3.0 vesafb: protected mode interface info at c000:f1f0 vesafb: pmi: set display start = c00cf226, set palette = c00cf290 vesafb: pmi: ports = 3b4 3b5 3ba 3c0 3c1 3c4 3c5 3c6 3c7 3c8 3c9 3cc 3ce 3cf 3d0 3d1 3d2 3d3 3d4 3d5 3da vesafb: hardware supports DCC2 transfers vesafb: monitor limits: vf = 160 Hz, hf = 111 kHz, clk = 310 MHz vesafb: scrolling: redraw Console: switching to colour frame buffer device 128x48 vesafb: framebuffer at 0xd8000000, mapped to 0xf8880000, using 1536k, total 65536k fb0: VESA VGA frame buffer device ACPI: Power Button (FF) [PWRF] isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found serio: i8042 AUX port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A mice: PS/2 mouse device common for all mice input: AT Translated Set 2 keyboard on isa0060/serio0 input: ImPS/2 Generic Wheel Mouse on isa0060/serio1 io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered elevator: using anticipatory as default io scheduler Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller at PCI slot 0000:00:11.1 ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 5 PCI: setting IRQ 5 as level-triggered ACPI: PCI interrupt 0000:00:11.1[A] -> GSI 5 (level, low) -> IRQ 5 VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later VP_IDE: VIA vt8235 (rev 00) IDE UDMA133 controller on pci0000:00:11.1 ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:pio Probing IDE interface ide0... hda: SAMSUNG SP0802N, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hdc: LITE-ON COMBO LTC-48161H, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 Probing IDE interface ide2... ide2: Wait for ready failed before probe ! Probing IDE interface ide3... ide3: Wait for ready failed before probe ! Probing IDE interface ide4... ide4: Wait for ready failed before probe ! Probing IDE interface ide5... ide5: Wait for ready failed before probe ! hda: max request size: 1024KiB hda: 156368016 sectors (80060 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100) hda: cache flushes supported /dev/ide/host0/bus0/target0/lun0: p1 p2 p3 p4 < p5 p6 p7 p8 p9 p10 p11 > hdc: ATAPI 40X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33) Uniform CD-ROM driver Revision: 3.20 st: Version 20041025, fixed bufsize 32768, s/g segs 256 NET: Registered protocol family 2 IP: routing cache hash table of 8192 buckets, 64Kbytes TCP: Hash tables configured (established 262144 bind 65536) NET: Registered protocol family 1 NET: Registered protocol family 17 ACPI wakeup devices: PCI0 USB0 USB1 USB2 USB6 USB7 USB8 USB9 UAR1 LPT1 ACPI: (supports S0 S1 S4 S5) kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. Freeing unused kernel memory: 188k freed Adding 1004020k swap on /dev/hda5. Priority:-1 extents:1 EXT3 FS on hda6, internal journal nvidia: module license 'NVIDIA' taints kernel. ACPI: PCI interrupt 0000:01:00.0[A] -> GSI 5 (level, low) -> IRQ 5 NVRM: loading NVIDIA Linux x86 NVIDIA Kernel Module 1.0-6629 Wed Nov 3 13:12:51 PST 2004 EXT3-fs warning: maximal mount count reached, running e2fsck is recommended kjournald starting. Commit interval 5 seconds EXT3 FS on hda11, internal journal EXT3-fs: mounted filesystem with ordered data mode. EXT3-fs warning: maximal mount count reached, running e2fsck is recommended kjournald starting. Commit interval 5 seconds EXT3 FS on hda10, internal journal EXT3-fs: mounted filesystem with ordered data mode. EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended EXT3-fs warning: maximal mount count reached, running e2fsck is recommended kjournald starting. Commit interval 5 seconds EXT3 FS on hda8, internal journal EXT3-fs: mounted filesystem with ordered data mode. EXT3-fs warning: maximal mount count reached, running e2fsck is recommended kjournald starting. Commit interval 5 seconds EXT3 FS on hda7, internal journal EXT3-fs: mounted filesystem with ordered data mode. usbcore: registered new driver usbfs usbcore: registered new driver hub Linux agpgart interface v0.100 (c) Dave Jones agpgart: Detected VIA KT400/KT400A/KT600 chipset agpgart: Maximum main memory to use for agp memory: 816M agpgart: AGP aperture is 128M @ 0xd0000000 8139too Fast Ethernet driver 0.9.27 ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 PCI: setting IRQ 11 as level-triggered ACPI: PCI interrupt 0000:00:0b.0[A] -> GSI 11 (level, low) -> IRQ 11 eth0: RealTek RTL8139 at 0xf8822000, 00:e0:52:00:12:89, IRQ 11 eth0: Identified 8139 chip type 'RTL-8100B/8139D' eth0: link up, 100Mbps, full-duplex, lpa 0x41E1 USB Universal Host Controller Interface driver v2.2 ACPI: PCI interrupt 0000:00:10.0[A] -> GSI 5 (level, low) -> IRQ 5 uhci_hcd 0000:00:10.0: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller uhci_hcd 0000:00:10.0: irq 5, io base 0xd400 uhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 2 ports detected ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 5 ACPI: PCI interrupt 0000:00:10.1[B] -> GSI 5 (level, low) -> IRQ 5 uhci_hcd 0000:00:10.1: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#2) uhci_hcd 0000:00:10.1: irq 5, io base 0xd800 uhci_hcd 0000:00:10.1: new USB bus registered, assigned bus number 2 hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 ACPI: PCI interrupt 0000:00:10.2[C] -> GSI 11 (level, low) -> IRQ 11 uhci_hcd 0000:00:10.2: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#3) uhci_hcd 0000:00:10.2: irq 11, io base 0xdc00 uhci_hcd 0000:00:10.2: new USB bus registered, assigned bus number 3 hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected ACPI: PCI interrupt 0000:00:10.3[D] -> GSI 11 (level, low) -> IRQ 11 ehci_hcd 0000:00:10.3: VIA Technologies, Inc. USB 2.0 ehci_hcd 0000:00:10.3: irq 11, pci mem 0xe3001000 ehci_hcd 0000:00:10.3: new USB bus registered, assigned bus number 4 ehci_hcd 0000:00:10.3: USB 2.0 initialized, EHCI 1.00, driver 26 Oct 2004 hub 4-0:1.0: USB hub found hub 4-0:1.0: 6 ports detected ACPI: PCI interrupt 0000:00:11.5[C] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:11.5 to 64 parport_pc: Ignoring new-style parameters in presence of obsolete ones parport: PnPBIOS parport detected. parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE] ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI) lp0: using parport0 (interrupt-driven). agpgart: Found an AGP 3.5 compliant device at 0000:00:00.0. agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode agpgart: Found an AGP 3.5 compliant device at 0000:00:00.0. agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode ------ end ------
Ok, since it's not fbsplash and since it was caused by an incorrect configuration in the first place, I'm closing the bug. Thanks for making the tests :)
