Linux: monitor shows out of range 38.7 khz/78 hz

Hi,

Can you test with another monitor? Or try the following commands:
xrandr -s 0

OR
xrandr -s <your_screen_resolution>

Also you can use dmesg to see if the kernel outputs any additional debug info.

Best Regards,
Yordan

Hi Yordan,

I checked with other monitor, nothing is displayed.

I checked with "xrandr" in omapl138 development board, it shows command not found.

I am attaching following ,

root@omapl138-lcdk:~# dmesg

[ 0.253620] NET: Registered protocol family 1
[ 0.255248] RPC: Registered named UNIX socket transport module.
[ 0.255285] RPC: Registered udp transport module.
[ 0.255299] RPC: Registered tcp transport module.
[ 0.255310] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.260785] workingset: timestamp_bits=14 max_order=15 bucket_order=1
[ 0.292393] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.292443] io scheduler noop registered (default)
[ 0.292468] io scheduler mq-deadline registered
[ 0.292487] io scheduler kyber registered
[ 0.294921] pinctrl-single 1c14120.pinmux: 160 pins at pa fec14120 size 80
[ 0.626831] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
[ 0.639595] console [ttyS2] disabled
[ 0.639881] serial8250.2: ttyS2 at MMIO 0x1d0d000 (irq = 61, base_baud = 8250000) is a TI DA8xx/66AK2x
[ 1.042613] console [ttyS2] enabled
[ 1.053876] brd: module loaded
[ 1.057857] mdio_bus fixed-0: GPIO lookup for consumer reset
[ 1.057896] mdio_bus fixed-0: using lookup tables for GPIO lookup
[ 1.057920] mdio_bus fixed-0: lookup for GPIO reset failed
[ 1.057984] libphy: Fixed MDIO Bus: probed
[ 1.066785] mdio_bus davinci_mdio.0: GPIO lookup for consumer reset
[ 1.066827] mdio_bus davinci_mdio.0: using lookup tables for GPIO lookup
[ 1.066851] mdio_bus davinci_mdio.0: lookup for GPIO reset failed
[ 1.118705] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5, bus freq 2200000
[ 1.125232] davinci_mdio davinci_mdio.0: detected phy mask ffffff7f
[ 1.133127] libphy: davinci_mdio.0: probed
[ 1.136003] davinci_mdio davinci_mdio.0: phy[7]: device davinci_mdio.0:07, driver SMSC LAN8710/LAN8720
[ 1.145988] i2c /dev entries driver
[ 1.148949] IR NEC protocol handler initialized
[ 1.152228] IR RC5(x/sz) protocol handler initialized
[ 1.156003] IR RC6 protocol handler initialized
[ 1.159648] IR JVC protocol handler initialized
[ 1.162919] IR Sony protocol handler initialized
[ 1.166256] IR SANYO protocol handler initialized
[ 1.169979] IR Sharp protocol handler initialized
[ 1.173423] IR MCE Keyboard/mouse protocol handler initialized
[ 1.177982] IR XMP protocol handler initialized
[ 1.183526] sdhci: Secure Digital Host Controller Interface driver
[ 1.188639] sdhci: Copyright(c) Pierre Ossman
[ 1.192519] davinci_mmc da830-mmc.0: GPIO lookup for consumer cd
[ 1.192556] davinci_mmc da830-mmc.0: using device tree for GPIO lookup
[ 1.192673] of_get_named_gpiod_flags: parsed 'cd-gpios' property of node '/soc@1c00000/mmc@40000[0]' - status (0)
[ 1.192718] davinci_mmc da830-mmc.0: Got CD GPIO
[ 1.196098] davinci_mmc da830-mmc.0: GPIO lookup for consumer wp
[ 1.196117] davinci_mmc da830-mmc.0: using device tree for GPIO lookup
[ 1.196160] of_get_named_gpiod_flags: can't parse 'wp-gpios' property of node '/soc@1c00000/mmc@40000[0]'
[ 1.196193] of_get_named_gpiod_flags: can't parse 'wp-gpio' property of node '/soc@1c00000/mmc@40000[0]'
[ 1.196213] davinci_mmc da830-mmc.0: using lookup tables for GPIO lookup
[ 1.196234] davinci_mmc da830-mmc.0: lookup for GPIO wp failed
[ 1.249697] davinci_mmc da830-mmc.0: Using DMA, 4-bit mode
[ 1.254519] sdhci-pltfm: SDHCI platform and OF driver helper
[ 1.276457] NET: Registered protocol family 10
[ 1.284058] Segment Routing with IPv6
[ 1.286697] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 1.294264] NET: Registered protocol family 17
[ 1.311404] console [netcon0] enabled
[ 1.314017] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.321503] mmc0: new high speed SDHC card at address e624
[ 1.323203] mmcblk0: mmc0:e624 SS08G 7.40 GiB
[ 1.330205] mmcblk0: p1 p2
[ 1.341808] netconsole: network logging started
[ 1.346048] davinci_emac davinci_emac.1: incompatible machine/device type for reading mac address
[ 1.354151] davinci_emac davinci_emac.1: using random MAC addr: 1e:e2:5b:38:73:75
[ 1.367612] of_get_named_gpiod_flags: parsed 'gpios' property of node '/gpio-keys/user1[0]' - status (0)
[ 1.367670] gpio-36 (GPIO Key USER1): gpiod_set_debounce: missing set() or set_config() operations
[ 1.367897] of_get_named_gpiod_flags: parsed 'gpios' property of node '/gpio-keys/user2[0]' - status (0)
[ 1.367942] gpio-37 (GPIO Key USER2): gpiod_set_debounce: missing set() or set_config() operations
[ 1.369255] input: gpio-keys as /devices/platform/gpio-keys/input/input0
[ 1.379080] hctosys: unable to open rtc device (rtc0)
[ 1.383401] ALSA device list:
[ 1.385094] No soundcards found.
[ 1.429528] random: fast init done
[ 1.504662] EXT4-fs (mmcblk0p2): 1 orphan inode deleted
[ 1.508981] EXT4-fs (mmcblk0p2): recovery complete
[ 1.527151] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 1.534578] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 1.557261] devtmpfs: mounted
[ 1.560362] Freeing unused kernel memory: 236K
[ 1.563550] This architecture does not have kernel memory protection.
[ 2.166236] systemd[1]: System time before build time, advancing clock.
[ 2.373746] systemd[1]: systemd 234 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 -IDN default-hierarchy=hybrid)
[ 2.396487] systemd[1]: Detected architecture arm.
[ 2.444236] systemd[1]: Set hostname to <omapl138-lcdk>.
[ 4.546396] random: systemd: uninitialized urandom read (16 bytes read)
[ 4.553449] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ 4.632081] random: systemd: uninitialized urandom read (16 bytes read)
[ 4.651151] systemd[1]: Created slice System Slice.
[ 4.689795] random: systemd: uninitialized urandom read (16 bytes read)
[ 4.702887] systemd[1]: Created slice system-getty.slice.
[ 4.761962] systemd[1]: Mounting Kernel Debug File System...
[ 4.881741] systemd[1]: Listening on Process Core Dump Socket.
[ 4.942210] systemd[1]: Mounting POSIX Message Queue File System...
[ 4.971655] systemd[1]: Listening on Journal Socket (/dev/log).
[ 5.324061] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.822982] cryptodev: loading out-of-tree module taints kernel.
[ 5.852569] cryptodev: driver 1.9 loaded.
[ 8.008229] systemd-journald[60]: Received request to flush runtime journal from PID 1
[ 14.781430] davinci-rproc davinci-rproc.0: assigned reserved memory node dsp-memory@c3000000
[ 14.910912] remoteproc remoteproc0: dsp is available
[ 15.070868] alloc_contig_range: [c6440, c6441) PFNs busy
[ 15.274615] evbug: Connected device: input0 (gpio-keys at gpio-keys/input0)
[ 15.500356] remoteproc remoteproc0: powering up dsp
[ 15.504049] remoteproc remoteproc0: Booting fw image rproc-dsp-fw, size 3985484
[ 16.368974] remoteproc remoteproc0: registered virtio0 (type 7)
[ 16.373675] remoteproc remoteproc0: remote processor dsp is now up
[ 16.511260] omap_rtc 1c23000.rtc: char device (253:0)
[ 16.511834] omap_rtc 1c23000.rtc: registered as rtc0
[ 16.529770] alloc_contig_range: [c6440, c6441) PFNs busy
[ 16.595888] alloc_contig_range: [c6440, c6441) PFNs busy
[ 17.455589] SCSI subsystem initialized
[ 17.521359] davinci-wdt davinci-wdt: heartbeat 60 sec
[ 17.629698] alloc_contig_range: [c6440, c6441) PFNs busy
[ 17.969490] libata version 3.00 loaded.
[ 18.179058] vpif vpif: vpif probe success
[ 18.186604] alloc_contig_range: [c6440, c6441) PFNs busy
[ 18.264273] ahci_da850 ahci_da850: forcing PORTS_IMPL to 0x1
[ 18.319961] ahci_da850 ahci_da850: AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl platform mode
[ 18.327547] ahci_da850 ahci_da850: flags: ncq sntf pm led clo only pmp pio slum part ccc
[ 18.402829] alloc_contig_range: [c6440, c6441) PFNs busy
[ 18.410726] usbcore: registered new interface driver usbfs
[ 18.411085] usbcore: registered new interface driver hub
[ 18.449529] usbcore: registered new device driver usb
[ 18.473333] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 18.591639] of_get_named_gpiod_flags: can't parse 'gpio-reset' property of node '/soc@1c00000/i2c@22000/tlv320aic3106@18[0]'
[ 18.591725] tlv320aic3x-codec 0-0018: 0-0018 supply IOVDD not found, using dummy regulator
[ 18.591997] tlv320aic3x-codec 0-0018: 0-0018 supply DVDD not found, using dummy regulator
[ 18.592349] tlv320aic3x-codec 0-0018: 0-0018 supply AVDD not found, using dummy regulator
[ 18.592617] tlv320aic3x-codec 0-0018: 0-0018 supply DRVDD not found, using dummy regulator
[ 18.592884] tlv320aic3x-codec 0-0018: Invalid supply voltage(s) AVDD: -22, DVDD: -22
[ 18.596028] alloc_contig_range: [c6440, c6441) PFNs busy
[ 18.610730] asoc-simple-card sound: ASoC: Failed to create card debugfs directory
[ 18.613440] of_get_named_gpiod_flags: can't parse 'simple-audio-card,hp-det-gpio' property of node '/sound[0]'
[ 18.613487] of_get_named_gpiod_flags: can't parse 'simple-audio-card,mic-det-gpio' property of node '/sound[0]'
[ 18.620270] ohci-da8xx: DA8XX
[ 18.679012] alloc_contig_range: [c6440, c6460) PFNs busy
[ 18.708758] alloc_contig_range: [c6440, c6460) PFNs busy
[ 18.719708] asoc-simple-card sound: tlv320aic3x-hifi <-> davinci-mcasp.0 mapping ok
[ 18.879002] alloc_contig_range: [c6440, c6441) PFNs busy
[ 18.985916] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 18.985933] [drm] No driver support for vblank timestamp query.
[ 19.000405] [drm] EDID readout failed, falling back to standard modes
[ 19.512195] tvp514x 0-005d: tvp514x 0-005d decoder driver registered !!
[ 19.512784] vpif_capture vpif_capture: registered sub device tvp514x-0
[ 19.525982] vpif_capture vpif_capture: VPIF capture driver initialized
[ 19.892410] tilcdc da8xx_lcdc.0: tilcdc_crtc_irq(0x00000160): FIFO underflow
[ 20.024705] Console: switching to colour frame buffer device 100x37
[ 20.045332] scsi host0: ahci_da850
[ 20.046659] ata1: SATA max UDMA/133 mmio [mem 0x01e18000-0x01e19fff] port 0x100 irq 67
[ 20.047806] ohci-da8xx ohci-da8xx: USB Host Controller
[ 20.047987] ohci-da8xx ohci-da8xx: new USB bus registered, assigned bus number 1
[ 20.550535] tilcdc da8xx_lcdc.0: fb0: frame buffer device
[ 20.625977] [drm] Initialized tilcdc 1.0.0 20121205 for da8xx_lcdc.0 on minor 0
[ 20.712121] alloc_contig_range: 1 callbacks suppressed
[ 20.712152] alloc_contig_range: [c6440, c6441) PFNs busy
[ 20.809816] ohci-da8xx ohci-da8xx: irq 59, io mem 0x01e25000
[ 20.940591] hub 1-0:1.0: USB hub found
[ 20.976181] hub 1-0:1.0: 1 port detected
[ 21.035836] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[ 21.179718] alloc_contig_range: [c6440, c6441) PFNs busy
[ 21.260576] alloc_contig_range: [c6440, c6441) PFNs busy
[ 21.402588] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 21.407236] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 2
[ 21.580453] hub 2-0:1.0: USB hub found
[ 21.636289] hub 2-0:1.0: 1 port detected
[ 22.039338] ata1: SATA link down (SStatus 0 SControl 300)
[ 23.120080] random: crng init done
[ 23.122252] random: 7 urandom warning(s) missed due to ratelimiting
[ 26.370484] davinci_mdio davinci_mdio.0: resetting idled controller
[ 26.550956] SMSC LAN8710/LAN8720 davinci_mdio.0:07: attached PHY driver [SMSC LAN8710/LAN8720] (mii_bus:phy_addr=davinci_mdio.0:07, irq=POLL)
[ 26.697959] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 29.583012] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 32.960267] NET: Registered protocol family 15
[ 36.052529] Initializing XFRM netlink socket
[ 36.292405] virtio_rpmsg_bus virtio0: rpmsg host is online
[ 36.296931] virtio_rpmsg_bus virtio0: creating channel rpmsg-proto addr 0x3d
[ 43.144879] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xcc
[ 43.242723] nand: Micron MT29F4G16ABADAH4
[ 43.289079] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 43.414973] Bad block table not found for chip 0
[ 43.484170] Bad block table not found for chip 0
[ 43.487552] Scanning device for bad blocks
[ 45.937693] NET: Registered protocol family 44
[ 47.133302] Bad block table written to 0x00001ffe0000, version 0x01
[ 47.162318] Bad block table written to 0x00001ffc0000, version 0x01
[ 47.373849] 3 ofpart partitions found on MTD device davinci-nand.0
[ 47.386797] Creating 3 MTD partitions on "davinci-nand.0":
[ 47.420903] 0x000000000000-0x000000020000 : "u-boot env"
[ 47.459807] 0x000000020000-0x0000000a0000 : "u-boot"
[ 47.496220] 0x0000000a0000-0x000020000000 : "free space"
[ 47.572820] davinci_nand davinci-nand.0: controller rev. 2.5
root@omapl138-lcdk:~#

Regards,

Allwyn

Hi Yordan,

I have gone through the above link. I didn't understand the procedure. I am new to this. So could you please explain the exact procedure for solving this issue.

Regards,
Allwyn

It is quite well explained.

In the kernel source there is an EDID HOW TO located in Documentation/EDID/HOWTO.txt . You can see how to set your screen resolution & frequency there.

Copy the edid in lib/firmware folder in the kernel sources

After that in the defconfig file tisdk_omapl138-lcdk_defconfig located in arch/arm/configs you add CONFIG_DRM_LOAD_EDID_FIRMWARE=y

Recompile the kernel.

Best Regards,
Yordan

Hi Yordan,

I checked with above procedure as you mentioned. I didn't get the result.

The monitor shows,

my monitor supports following resolutions 1600x900, 1280x1024, 1024x768, 800x600.

How can i solve this?