Hello,

I’m not sure what is wrong but k3b after manual select, burn but report not full write speed?

Someone know why?

I set x6 speed but k3b report only ~ x2.2 or if I select x4 speed current write speed is ~ x1,5

```
K3b::IsoImager
-----------------------
mkisofs print size result: 8791658 (18005315584 bytes)
System
-----------------------
K3b Version: 20.8.1
KDE Version: 5.73.0
Qt Version: 5.15.0
Kernel: 5.4.64-1-MANJARO
Used versions
-----------------------
mkisofs: 3.2a09
growisofs: 7.1
growisofs
-----------------------
Executing 'builtin_dd if=/dev/fd/0 of=/dev/sr0 obs=32k seek=0'
/dev/sr0: pre-formatting blank BD-R for 24.8GB...
/dev/sr0: "Current Write Speed" is 6.1x4390KBps.
0/18005315584 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0%
14680064/18005315584 ( 0.1%) @1.0x, remaining 183:49 RBU 100.0% UBU 5.2%
45875200/18005315584 ( 0.3%) @2.1x, remaining 78:17 RBU 100.0% UBU 98.3%
76873728/18005315584 ( 0.4%) @2.1x, remaining 58:18 RBU 100.0% UBU 98.3%
108265472/18005315584 ( 0.6%) @2.1x, remaining 52:20 RBU 100.0% UBU 98.3%
139460608/18005315584 ( 0.8%) @2.1x, remaining 46:58 RBU 100.0% UBU 98.3%
170590208/18005315584 ( 0.9%) @2.1x, remaining 43:33 RBU 100.0% UBU 98.3%
200933376/18005315584 ( 1.1%) @2.0x, remaining 42:49 RBU 100.0% UBU 98.3%
231211008/18005315584 ( 1.3%) @2.0x, remaining 40:59 RBU 100.0% UBU 98.3%
262406144/18005315584 ( 1.5%) @2.1x, remaining 39:26 RBU 100.0% UBU 98.3%
292913152/18005315584 ( 1.6%) @2.0x, remaining 39:18 RBU 100.0% UBU 98.3%
322961408/18005315584 ( 1.8%) @2.0x, remaining 38:19 RBU 100.0% UBU 98.3%
354156544/18005315584 ( 2.0%) @2.1x, remaining 37:22 RBU 100.0% UBU 98.3%
384663552/18005315584 ( 2.1%) @2.0x, remaining 37:24 RBU 100.0% UBU 98.3%
414711808/18005315584 ( 2.3%) @2.0x, remaining 36:45 RBU 100.0% UBU 98.3%
445906944/18005315584 ( 2.5%) @2.1x, remaining 36:05 RBU 100.0% UBU 98.3%
477102080/18005315584 ( 2.6%) @2.1x, remaining 36:07 RBU 100.0% UBU 98.3%
508297216/18005315584 ( 2.8%) @2.1x, remaining 35:34 RBU 100.0% UBU 98.3%
540049408/18005315584 ( 3.0%) @2.1x, remaining 35:02 RBU 100.0% UBU 98.3%
571604992/18005315584 ( 3.2%) @2.1x, remaining 35:04 RBU 100.0% UBU 98.3%
603717632/18005315584 ( 3.4%) @2.1x, remaining 34:35 RBU 100.0% UBU 98.3%
636747776/18005315584 ( 3.5%) @2.2x, remaining 34:05 RBU 100.0% UBU 98.3%
669089792/18005315584 ( 3.7%) @2.2x, remaining 34:06 RBU 100.0% UBU 98.3%
700973056/18005315584 ( 3.9%) @2.1x, remaining 33:44 RBU 100.0% UBU 98.3%
734003200/18005315584 ( 4.1%) @2.2x, remaining 33:20 RBU 100.0% UBU 98.3%
767033344/18005315584 ( 4.3%) @2.2x, remaining 33:20 RBU 100.0% UBU 98.3%
800063488/18005315584 ( 4.4%) @2.2x, remaining 32:58 RBU 100.0% UBU 98.3%
833093632/18005315584 ( 4.6%) @2.2x, remaining 32:38 RBU 100.0% UBU 98.3%
866123776/18005315584 ( 4.8%) @2.2x, remaining 32:39 RBU 100.0% UBU 98.3%
899153920/18005315584 ( 5.0%) @2.2x, remaining 32:20 RBU 100.0% UBU 98.3%
932184064/18005315584 ( 5.2%) @2.2x, remaining 32:03 RBU 100.0% UBU 98.3%
965214208/18005315584 ( 5.4%) @2.2x, remaining 32:04 RBU 100.0% UBU 98.3%
998244352/18005315584 ( 5.5%) @2.2x, remaining 31:48 RBU 100.0% UBU 98.3%
1031274496/18005315584 ( 5.7%) @2.2x, remaining 31:32 RBU 100.0% UBU 98.3%
1064239104/18005315584 ( 5.9%) @2.2x, remaining 31:34 RBU 100.0% UBU 98.3%
1082654720/18005315584 ( 6.0%) @1.2x, remaining 31:46 RBU 100.0% UBU 98.3%
1115684864/18005315584 ( 6.2%) @2.2x, remaining 31:32 RBU 100.0% UBU 98.3%
1148715008/18005315584 ( 6.4%) @2.2x, remaining 31:32 RBU 100.0% UBU 98.3%
1179910144/18005315584 ( 6.6%) @2.1x, remaining 31:22 RBU 100.0% UBU 98.3%
1212940288/18005315584 ( 6.7%) @2.2x, remaining 31:08 RBU 100.0% UBU 98.3%
1245184000/18005315584 ( 6.9%) @2.2x, remaining 31:10 RBU 100.0% UBU 98.3%
1277165568/18005315584 ( 7.1%) @2.1x, remaining 30:59 RBU 100.0% UBU 98.3%
1310195712/18005315584 ( 7.3%) @2.2x, remaining 30:47 RBU 100.0% UBU 98.3%
1343225856/18005315584 ( 7.5%) @2.2x, remaining 30:48 RBU 100.0% UBU 98.3%
1376256000/18005315584 ( 7.6%) @2.2x, remaining 30:36 RBU 100.0% UBU 98.3%
1409286144/18005315584 ( 7.8%) @2.2x, remaining 30:25 RBU 100.0% UBU 98.3%
1442250752/18005315584 ( 8.0%) @2.2x, remaining 30:25 RBU 100.0% UBU 98.3%
1475346432/18005315584 ( 8.2%) @2.2x, remaining 30:15 RBU 100.0% UBU 98.3%
1508376576/18005315584 ( 8.4%) @2.2x, remaining 30:04 RBU 100.0% UBU 98.3%
1543241728/18005315584 ( 8.6%) @2.3x, remaining 30:02 RBU 100.0% UBU 98.3%
1576927232/18005315584 ( 8.8%) @2.2x, remaining 29:51 RBU 100.0% UBU 98.3%
1611137024/18005315584 ( 8.9%) @2.3x, remaining 29:40 RBU 100.0% UBU 98.3%
1646002176/18005315584 ( 9.1%) @2.3x, remaining 29:39 RBU 100.0% UBU 98.3%
1680867328/18005315584 ( 9.3%) @2.3x, remaining 29:27 RBU 100.0% UBU 98.3%
1715732480/18005315584 ( 9.5%) @2.3x, remaining 29:16 RBU 100.0% UBU 98.3%
1750630400/18005315584 ( 9.7%) @2.3x, remaining 29:14 RBU 100.0% UBU 98.3%
1785462784/18005315584 ( 9.9%) @2.3x, remaining 29:04 RBU 100.0% UBU 98.3%
1820327936/18005315584 (10.1%) @2.3x, remaining 28:53 RBU 100.0% UBU 98.3%
1855193088/18005315584 (10.3%) @2.3x, remaining 28:52 RBU 100.0% UBU 98.3%
1889828864/18005315584 (10.5%) @2.3x, remaining 28:42 RBU 100.0% UBU 98.3%
1924923392/18005315584 (10.7%) @2.3x, remaining 28:32 RBU 100.0% UBU 98.3%
1959788544/18005315584 (10.9%) @2.3x, remaining 28:31 RBU 100.0% UBU 98.3%
1996488704/18005315584 (11.1%) @2.4x, remaining 28:19 RBU 100.0% UBU 98.3%
2031419392/18005315584 (11.3%) @2.3x, remaining 28:10 RBU 100.0% UBU 98.3%
2068054016/18005315584 (11.5%) @2.4x, remaining 28:07 RBU 100.0% UBU 98.3%
2102951936/18005315584 (11.7%) @2.3x, remaining 27:58 RBU 100.0% UBU 98.3%
2139619328/18005315584 (11.9%) @2.4x, remaining 27:48 RBU 100.0% UBU 98.3%
2163671040/18005315584 (12.0%) @1.6x, remaining 27:56 RBU 100.0% UBU 98.3%
2200174592/18005315584 (12.2%) @2.4x, remaining 27:46 RBU 100.0% UBU 98.3%
2235039744/18005315584 (12.4%) @2.3x, remaining 27:38 RBU 100.0% UBU 98.3%
2269904896/18005315584 (12.6%) @2.3x, remaining 27:36 RBU 100.0% UBU 98.3%
2293760000/18005315584 (12.7%) @1.6x, remaining 27:37 RBU 100.0% UBU 98.3%
2328428544/18005315584 (12.9%) @2.3x, remaining 27:29 RBU 100.0% UBU 98.3%
2361688064/18005315584 (13.1%) @2.2x, remaining 27:29 RBU 100.0% UBU 98.3%
2396520448/18005315584 (13.3%) @2.3x, remaining 27:21 RBU 100.0% UBU 98.3%
2420375552/18005315584 (13.4%) @1.6x, remaining 27:21 RBU 100.0% UBU 98.3%
2443116544/18005315584 (13.6%) @1.5x, remaining 27:29 RBU 100.0% UBU 98.3%
2479226880/18005315584 (13.8%) @2.4x, remaining 27:20 RBU 100.0% UBU 98.3%
2515795968/18005315584 (14.0%) @2.4x, remaining 27:11 RBU 100.0% UBU 98.3%
2552496128/18005315584 (14.2%) @2.4x, remaining 27:08 RBU 100.0% UBU 98.3%
2589196288/18005315584 (14.4%) @2.4x, remaining 26:59 RBU 100.0% UBU 98.3%
2625765376/18005315584 (14.6%) @2.4x, remaining 26:50 RBU 100.0% UBU 98.3%
2661416960/18005315584 (14.8%) @2.4x, remaining 26:48 RBU 100.0% UBU 98.3%
2697461760/18005315584 (15.0%) @2.4x, remaining 26:40 RBU 100.0% UBU 98.3%
2734161920/18005315584 (15.2%) @2.4x, remaining 26:31 RBU 100.0% UBU 98.3%
2754347008/18005315584 (15.3%) @1.3x, remaining 26:40 RBU 100.0% UBU 98.3%
2789212160/18005315584 (15.5%) @2.3x, remaining 26:32 RBU 100.0% UBU 98.3%
2825912320/18005315584 (15.7%) @2.4x, remaining 26:24 RBU 100.0% UBU 98.3%
2861891584/18005315584 (15.9%) @2.4x, remaining 26:22 RBU 100.0% UBU 98.3%
2897477632/18005315584 (16.1%) @2.4x, remaining 26:14 RBU 100.0% UBU 98.3%
2934177792/18005315584 (16.3%) @2.4x, remaining 26:06 RBU 100.0% UBU 98.3%
2969108480/18005315584 (16.5%) @2.3x, remaining 26:04 RBU 100.0% UBU 98.3%
3005743104/18005315584 (16.7%) @2.4x, remaining 25:56 RBU 100.0% UBU 98.3%
3039494144/18005315584 (16.9%) @2.3x, remaining 25:50 RBU 100.0% UBU 98.3%
3075473408/18005315584 (17.1%) @2.4x, remaining 25:48 RBU 100.0% UBU 98.3%
3110862848/18005315584 (17.3%) @2.4x, remaining 25:41 RBU 100.0% UBU 98.3%
3147038720/18005315584 (17.5%) @2.4x, remaining 25:34 RBU 100.0% UBU 98.3%
3181903872/18005315584 (17.7%) @2.3x, remaining 25:32 RBU 100.0% UBU 98.3%
3216769024/18005315584 (17.9%) @2.3x, remaining 25:26 RBU 100.0% UBU 98.3%
3251634176/18005315584 (18.1%) @2.3x, remaining 25:19 RBU 100.0% UBU 98.3%
3286302720/18005315584 (18.3%) @2.3x, remaining 25:18 RBU 100.0% UBU 98.3%
3319922688/18005315584 (18.4%) @2.2x, remaining 25:12 RBU 100.0% UBU 98.3%
3354394624/18005315584 (18.6%) @2.3x, remaining 25:06 RBU 100.0% UBU 98.3%
3389063168/18005315584 (18.8%) @2.3x, remaining 25:05 RBU 100.0% UBU 98.3%
3422289920/18005315584 (19.0%) @2.2x, remaining 24:59 RBU 100.0% UBU 98.3%
3457155072/18005315584 (19.2%) @2.3x, remaining 24:53 RBU 100.0% UBU 98.3%
3492020224/18005315584 (19.4%) @2.3x, remaining 24:52 RBU 100.0% UBU 98.3%
3528720384/18005315584 (19.6%) @2.4x, remaining 24:45 RBU 100.0% UBU 98.3%
3564732416/18005315584 (19.8%) @2.4x, remaining 24:38 RBU 100.0% UBU 98.3%
3601006592/18005315584 (20.0%) @2.4x, remaining 24:36 RBU 100.0% UBU 98.3%
3637116928/18005315584 (20.2%) @2.4x, remaining 24:29 RBU 100.0% UBU 98.3%
3673686016/18005315584 (20.4%) @2.4x, remaining 24:22 RBU 100.0% UBU 98.3%
3709992960/18005315584 (20.6%) @2.4x, remaining 24:20 RBU 100.0% UBU 98.3%
3745251328/18005315584 (20.8%) @2.4x, remaining 24:14 RBU 100.0% UBU 98.3%
3780968448/18005315584 (21.0%) @2.4x, remaining 24:08 RBU 100.0% UBU 98.3%
3816816640/18005315584 (21.2%) @2.4x, remaining 24:06 RBU 100.0% UBU 98.3%
3842506752/18005315584 (21.3%) @1.7x, remaining 24:04 RBU 100.0% UBU 98.3%
3878813696/18005315584 (21.5%) @2.4x, remaining 23:58 RBU 100.0% UBU 98.3%
3914072064/18005315584 (21.7%) @2.4x, remaining 23:56 RBU 100.0% UBU 98.3%
3950772224/18005315584 (21.9%) @2.4x, remaining 23:50 RBU 100.0% UBU 98.3%
3976134656/18005315584 (22.1%) @1.7x, remaining 23:48 RBU 100.0% UBU 98.3%
4011327488/18005315584 (22.3%) @2.3x, remaining 23:46 RBU 100.0% UBU 98.3%
4048027648/18005315584 (22.5%) @2.4x, remaining 23:40 RBU 100.0% UBU 98.3%
4083712000/18005315584 (22.7%) @2.4x, remaining 23:34 RBU 100.0% UBU 98.3%
4108582912/18005315584 (22.8%) @1.7x, remaining 23:37 RBU 100.0% UBU 98.3%
4145250304/18005315584 (23.0%) @2.4x, remaining 23:30 RBU 100.0% UBU 98.3%
4180148224/18005315584 (23.2%) @2.3x, remaining 23:25 RBU 100.0% UBU 98.3%
4216848384/18005315584 (23.4%) @2.4x, remaining 23:22 RBU 100.0% UBU 98.3%
4241031168/18005315584 (23.6%) @1.6x, remaining 23:22 RBU 99.9% UBU 98.3%
4277403648/18005315584 (23.8%) @2.4x, remaining 23:16 RBU 100.0% UBU 98.3%
4312268800/18005315584 (23.9%) @2.3x, remaining 23:13 RBU 100.0% UBU 98.3%
4347330560/18005315584 (24.1%) @2.3x, remaining 23:08 RBU 100.0% UBU 98.3%
4372824064/18005315584 (24.3%) @1.7x, remaining 23:07 RBU 100.0% UBU 98.3%
4407623680/18005315584 (24.5%) @2.3x, remaining 23:05 RBU 100.0% UBU 98.3%
4442554368/18005315584 (24.7%) @2.3x, remaining 22:59 RBU 100.0% UBU 98.3%
4477943808/18005315584 (24.9%) @2.4x, remaining 22:54 RBU 100.0% UBU 98.3%
4508614656/18005315584 (25.0%) @2.0x, remaining 22:54 RBU 100.0% UBU 98.3%
4523229184/18005315584 (25.1%) @1.0x, remaining 22:57 RBU 100.0% UBU 98.3%
```