I tested the version of blkid from http://download.opensuse.org/repositories/home:/wolfi323:/branches:/OBS_Maintained:/util-linux/openSUSE_Leap_42.2_Update. This version works well and all CD are recognized and can be mounted in file managers. The outputs of blkid-dmesg, blkid, cdinfo and cdrom_id are identical to the versions 2.25 and 2.29 of libblkid. Thank you for your help. The outputs are attached below. Bibliothek:~ # dmesg -c >blkid-dmesg.log [ 1311.059379] ISO 9660 Extensions: Microsoft Joliet Level 1 [ 1311.153163] ISOFS: changing to secondary root [ 1317.812861] sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1317.812872] sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] [ 1317.812879] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Illegal mode for this track [ 1317.812885] sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 04 b5 ea 00 00 02 00 [ 1317.812890] blk_update_request: I/O error, dev sr0, sector 1234856 [ 1317.820866] sr 1:0:0:0: [sr0] tag#1 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1317.820876] sr 1:0:0:0: [sr0] tag#1 Sense Key : Illegal Request [current] [ 1317.820884] sr 1:0:0:0: [sr0] tag#1 Add. Sense: Illegal mode for this track [ 1317.820889] sr 1:0:0:0: [sr0] tag#1 CDB: Read(10) 28 00 00 04 b5 ea 00 00 01 00 [ 1317.820893] blk_update_request: I/O error, dev sr0, sector 1234856 [ 1317.820898] Buffer I/O error on dev sr0, logical block 308714, async page read [ 1317.828839] sr 1:0:0:0: [sr0] tag#3 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1317.828849] sr 1:0:0:0: [sr0] tag#3 Sense Key : Illegal Request [current] [ 1317.828855] sr 1:0:0:0: [sr0] tag#3 Add. Sense: Illegal mode for this track [ 1317.828861] sr 1:0:0:0: [sr0] tag#3 CDB: Read(10) 28 00 00 04 b5 eb 00 00 01 00 [ 1317.828866] blk_update_request: I/O error, dev sr0, sector 1234860 [ 1317.828870] Buffer I/O error on dev sr0, logical block 308715, async page read [ 1318.748895] sr 1:0:0:0: [sr0] tag#16 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.748906] sr 1:0:0:0: [sr0] tag#16 Sense Key : Illegal Request [current] [ 1318.748913] sr 1:0:0:0: [sr0] tag#16 Add. Sense: Illegal mode for this track [ 1318.748919] sr 1:0:0:0: [sr0] tag#16 CDB: Read(10) 28 00 00 04 b4 80 00 00 40 00 [ 1318.748924] blk_update_request: I/O error, dev sr0, sector 1233408 [ 1318.757021] sr 1:0:0:0: [sr0] tag#18 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.757032] sr 1:0:0:0: [sr0] tag#18 Sense Key : Illegal Request [current] [ 1318.757039] sr 1:0:0:0: [sr0] tag#18 Add. Sense: Illegal mode for this track [ 1318.757044] sr 1:0:0:0: [sr0] tag#18 CDB: Read(10) 28 00 00 04 b4 c0 00 00 40 00 [ 1318.757049] blk_update_request: I/O error, dev sr0, sector 1233664 [ 1318.764886] sr 1:0:0:0: [sr0] tag#19 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.764896] sr 1:0:0:0: [sr0] tag#19 Sense Key : Illegal Request [current] [ 1318.764903] sr 1:0:0:0: [sr0] tag#19 Add. Sense: Illegal mode for this track [ 1318.764908] sr 1:0:0:0: [sr0] tag#19 CDB: Read(10) 28 00 00 04 b4 80 00 00 01 00 [ 1318.764912] blk_update_request: I/O error, dev sr0, sector 1233408 [ 1318.764917] Buffer I/O error on dev sr0, logical block 308352, async page read [ 1318.772828] sr 1:0:0:0: [sr0] tag#21 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.772839] sr 1:0:0:0: [sr0] tag#21 Sense Key : Illegal Request [current] [ 1318.772845] sr 1:0:0:0: [sr0] tag#21 Add. Sense: Illegal mode for this track [ 1318.772851] sr 1:0:0:0: [sr0] tag#21 CDB: Read(10) 28 00 00 04 b4 81 00 00 01 00 [ 1318.772855] blk_update_request: I/O error, dev sr0, sector 1233412 [ 1318.772860] Buffer I/O error on dev sr0, logical block 308353, async page read [ 1318.848872] sr 1:0:0:0: [sr0] tag#23 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.848883] sr 1:0:0:0: [sr0] tag#23 Sense Key : Illegal Request [current] [ 1318.848889] sr 1:0:0:0: [sr0] tag#23 Add. Sense: Illegal mode for this track [ 1318.848895] sr 1:0:0:0: [sr0] tag#23 CDB: Read(10) 28 00 00 04 b5 e8 00 00 02 00 [ 1318.848899] blk_update_request: I/O error, dev sr0, sector 1234848 [ 1318.856895] sr 1:0:0:0: [sr0] tag#24 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.856906] sr 1:0:0:0: [sr0] tag#24 Sense Key : Illegal Request [current] [ 1318.856913] sr 1:0:0:0: [sr0] tag#24 Add. Sense: Illegal mode for this track [ 1318.856918] sr 1:0:0:0: [sr0] tag#24 CDB: Read(10) 28 00 00 04 b5 e8 00 00 01 00 [ 1318.856932] blk_update_request: I/O error, dev sr0, sector 1234848 [ 1318.856936] Buffer I/O error on dev sr0, logical block 308712, async page read [ 1318.864819] sr 1:0:0:0: [sr0] tag#26 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1318.864829] sr 1:0:0:0: [sr0] tag#26 Sense Key : Illegal Request [current] [ 1318.864836] sr 1:0:0:0: [sr0] tag#26 Add. Sense: Illegal mode for this track [ 1318.864841] sr 1:0:0:0: [sr0] tag#26 CDB: Read(10) 28 00 00 04 b5 e9 00 00 01 00 [ 1318.864846] blk_update_request: I/O error, dev sr0, sector 1234852 [ 1318.864850] Buffer I/O error on dev sr0, logical block 308713, async page read Bibliothek:~ # blkid /dev/sda1: PARTLABEL="primary" PARTUUID="13b01de7-2084-438c-959b-8ba118aeb172" /dev/sda2: UUID="bd90cc71-1a13-4b38-8c76-fd9e35a101bd" TYPE="swap" PARTLABEL="primary" PARTUUID="2291bd95-a4f4-4d14-b1ed-6f1db52c5b7f" /dev/sda3: UUID="3ede6e13-8d54-4561-96ea-a9f6b23c6b01" UUID_SUB="ea557408-ec7d-4bd3-b1b0-85053c52f99e" TYPE="btrfs" PTTYPE="dos" PARTLABEL="primary" PARTUUID="fd00c289-a61a-4f9a-97d4-02d97cf63510" /dev/sda4: UUID="c6669ee6-3fe4-4d84-ba79-30b876e91dca" TYPE="ext4" PARTLABEL="primary" PARTUUID="6caddcf3-afb3-4aa6-a196-74855d37de97" /dev/sdb1: PARTLABEL="primary" PARTUUID="2d12f4ca-1e65-4825-8c90-7e5f04c4d3cb" /dev/sdb2: UUID="ca11ca5e-6502-4755-b500-28a7ba6d637f" TYPE="swap" PARTLABEL="primary" PARTUUID="449f180c-72d6-4aa4-9a5f-f6e35858e01a" /dev/sdb3: UUID="b291571f-7561-40c6-b91f-69f04645b8dd" UUID_SUB="f373acde-1248-42fc-be8f-c795edf59550" TYPE="btrfs" PTTYPE="dos" PARTLABEL="primary" PARTUUID="51dfb89f-c053-495b-b323-ccb848db2cbb" /dev/sdb4: UUID="5c7be590-4157-43f8-9443-621d5a93f172" TYPE="ext4" PARTLABEL="primary" PARTUUID="d75b90be-37ff-4799-8aa3-d0bed67d2cf5" /dev/sr0: UUID="2003-11-10-09-20-19-95" LABEL="Saga" TYPE="iso9660" Bibliothek:~ # cdinfo CD Info 1.1 | (c) 1996-98 Gerd Knorr & Heiko Ei���feldt __________________________________ track list (1 - 10) nr: msf lba ctrl adr type 1: 00:02:00 (000000) 0x4 0x1 data 2: 45:37:68 (205193) 0x0 0x1 audio 3: 48:36:36 (218586) 0x0 0x1 audio 4: 50:55:62 (229037) 0x0 0x1 audio 5: 53:13:15 (239340) 0x0 0x1 audio 6: 55:27:15 (249390) 0x0 0x1 audio 7: 58:12:31 (261781) 0x0 0x1 audio 8: 60:34:05 (272405) 0x0 0x1 audio 9: 64:05:06 (288231) 0x0 0x1 audio 10: 66:31:01 (299176) 0x0 0x1 audio 170: 68:38:17 (308717) 0x0 0x1 audio (leadout) __________________________________ what ioctl's report get mcn : disc status : unknown (failed?) multisession: 0 audio status: invalid __________________________________ try to find out what sort of CD this is CD-ROM with iso9660 fs and joliet extension level 1 iso9660: 400 MB size, label `SAGA ' mixed mode CD Bibliothek:~ # /usr/lib/udev/cdrom_id /dev/sr0 ID_CDROM=1 ID_CDROM_CD=1 ID_CDROM_CD_R=1 ID_CDROM_CD_RW=1 ID_CDROM_DVD=1 ID_CDROM_DVD_R=1 ID_CDROM_DVD_RW=1 ID_CDROM_DVD_RAM=1 ID_CDROM_DVD_PLUS_R=1 ID_CDROM_DVD_PLUS_RW=1 ID_CDROM_DVD_PLUS_R_DL=1 ID_CDROM_BD=1 ID_CDROM_MRW=1 ID_CDROM_MRW_W=1 ID_CDROM_MEDIA=1 ID_CDROM_MEDIA_CD=1 ID_CDROM_MEDIA_SESSION_COUNT=1 ID_CDROM_MEDIA_TRACK_COUNT=10 ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=9 ID_CDROM_MEDIA_TRACK_COUNT_DATA=1